On behalf of the Electric Reliability Council of Texas (ERCOT), I would like to take this opportunity to thank you for conserving electricity during this period of continuous hot, dry weather in Texas. At ERCOT, we have been working around the clock to keep the electricity flowing, making sure you have the resources you need to stay productive and well this summer. While we are always charged with making sure you have adequate electricity, this summer has caused a particularly serious challenge to the electric grid . Because the heat has been sustained over the entire state with little or no rain or cloud cover, the strain on the electric grid has been greater than ever before. In Dallas and Austin, we are beating all-time records for triple-digit heat. We have hit three all-time demand peaks in the last two weeks alone, meaning we've used more electricity on three days this summer than on any other day in the history of ERCOT, which covers most of Texas. Additionally, Texas is experiencing economic and population growth while much of the rest of the country is not. All of these factors are contributing to very high energy usage this summer. As you probably read in your newspaper or saw on the news, ERCOT has issued appeals for conservation across the state this August. We have encouraged businesses and residential customers to help us save electricity between the critical hours of 3 and 7 p.m. For instance, turning off unnecessary lights, appliances and electronic equipment can help conditions significantly. Conservation efforts help us avoid statewide rotating outages and keep your lights on and air-conditioners running. Conservation not only keeps power and cool air flowing to every citizen, it ensures that uninterrupted power flows to critical care customers, who are easily harmed in the extreme heat. While ERCOT has not called for rotating outages this summer, it is important to remember that we only carry out these orderly, temporary outages to prevent a catastrophic collapse of the electric grid. As you may remember from the Northeast blackout a few years ago, once a grid failure occurs, it can take days to restore power to all consumers. Your conservation efforts help us prevent this from happening. While ERCOT always carries reserves, our power supply is not unlimited. With your help and conservation efforts, though, we can keep residents and businesses healthy and productive this summer. Serious challenge to the electric grid is due to the following facts Except  _  .
non-stop hot, dry weather little or no rainfall all over the state rapid growth in energy production economic and population growth
Question: On behalf of the Electric Reliability Council of Texas (ERCOT), I would like to take this opportunity to thank you for conserving electricity during this period of continuous hot, dry weather in Texas. At ERCOT, we have been working around the clock to keep the electricity flowing, making sure you have the resources you need to stay productive and well this summer. While we are always charged with making sure you have adequate electricity, this summer has caused a particularly serious challenge to the electric grid . Because the heat has been sustained over the entire state with little or no rain or cloud cover, the strain on the electric grid has been greater than ever before. In Dallas and Austin, we are beating all-time records for triple-digit heat. We have hit three all-time demand peaks in the last two weeks alone, meaning we've used more electricity on three days this summer than on any other day in the history of ERCOT, which covers most of Texas. Additionally, Texas is experiencing economic and population growth while much of the rest of the country is not. All of these factors are contributing to very high energy usage this summer. As you probably read in your newspaper or saw on the news, ERCOT has issued appeals for conservation across the state this August. We have encouraged businesses and residential customers to help us save electricity between the critical hours of 3 and 7 p.m. For instance, turning off unnecessary lights, appliances and electronic equipment can help conditions significantly. Conservation efforts help us avoid statewide rotating outages and keep your lights on and air-conditioners running. Conservation not only keeps power and cool air flowing to every citizen, it ensures that uninterrupted power flows to critical care customers, who are easily harmed in the extreme heat. While ERCOT has not called for rotating outages this summer, it is important to remember that we only carry out these orderly, temporary outages to prevent a catastrophic collapse of the electric grid. As you may remember from the Northeast blackout a few years ago, once a grid failure occurs, it can take days to restore power to all consumers. Your conservation efforts help us prevent this from happening. While ERCOT always carries reserves, our power supply is not unlimited. With your help and conservation efforts, though, we can keep residents and businesses healthy and productive this summer. Serious challenge to the electric grid is due to the following facts Except  _  .
A. non-stop hot, dry weather
B. little or no rainfall all over the state
C. rapid growth in energy production
D. economic and population growth
Answer: