Things are compared with other things to:
1. give them a deeper meaning
2. explainations
3. To show similarites
I believe it would be B, because there are two subjects that the speaker is referring to at the beginning of the sentence; the caterpillar and the leaf. When they use the word "it" in the second half of the sentence it is unclear whether they mean to say if "it" is the leaf or the caterpillar which they are carrying to their brother.
Jonathan Swift uses A. optimistic to F. to remind people of their childhood. The fact that he doesn't have any children made him eligible from his proposal.
In "Things Fall Apart" by Chinua Achebe, the greatest internal conflict Okonkwo has is him being what he considered ideal masculinity. He became known as a great fighter, a wealthy farmer, and a highly esteemed man in his clan, but all of this changes when he is exiled for seven years. He downgrades to sharecropping from his mother's family's land, and he immediately begins planning how to regain his status when he returns to Umuofia. "Okonkwo saw clearly the high esteem in which he would be held, and he saw himself taking the highest title in the land." He feels that his value is attached only to wealth and power.
