What is represented by (a) the olive tree, (b) its root, (c) its trunk, and (d) its branches?
١٣ مَاذَا تُمَثِّلُ (‏ أ )‏ شَجَرَةُ ٱلزَّيْتُونِ ،‏ (‏ ب )‏ أَصْلُهَا ،‏ (‏ ج )‏ جِذْعُهَا ،‏ (‏ د )‏ وَأَغْصَانُهَا ؟‏