Answer: D) Love lasts when life is good, but friendship lasts even when life is difficult.
Step-by-step explanation: A simile is a comparison between elements that aren't obviously related, it uses words like "like" and "as" to make the comparison, and it helps to create an image in the reader's mind. In the given passage the author uses similes to compare love with a wild rose-briar and friendship with a holly-tree. This comparisons helps to support the idea that love lasts when life is good, but friendship lasts even when life is difficult, because it says that the rose-briar is beautiful but only in spring and summer, but the holly-tree is there also in winter.