People faint when the normal blood supply to the brain is suddenly cut down. This can happen if they are surprised or shocked by sudden news or by something they see suddenly. Some people faint if they see others hurt .Some people faint in crowds. Others faint if they are in a room that is hot and stuffy. If a person faints while standing, lay him down. If his face is pale, lift his feet .If he is sitting down when he faints, place his head between his knees, loosen any tight clothing that might keep him from breathing easily .If possible, place a wet cloth on his forehead. People may faint if they  _  .
see their friends in the street see something unexpected see something splendid see something happy
Question: People faint when the normal blood supply to the brain is suddenly cut down. This can happen if they are surprised or shocked by sudden news or by something they see suddenly. Some people faint if they see others hurt .Some people faint in crowds. Others faint if they are in a room that is hot and stuffy. If a person faints while standing, lay him down. If his face is pale, lift his feet .If he is sitting down when he faints, place his head between his knees, loosen any tight clothing that might keep him from breathing easily .If possible, place a wet cloth on his forehead. People may faint if they  _  .
A. see their friends in the street
B. see something unexpected
C. see something splendid
D. see something happy
Answer: