Question

This question has two parts. First, answer Part A. Then, answer Part B.

Answer 1

Answer: On Part A, the answer is alternative A, since there's double meaning in the words "communicate" and "drop them a line".  On Part B, the best interpretation for the double meaning of these words on Part A are to really catch the fish or to send a note to it, so altenative B is the correct one.

Answer 2

Let's read the text again...

My grandfather the fisherman always told me that the best way to communicate with fish is to drop them a line.

There are three phrases that help us to understand the pun in the text: The grandfather is a fisherman, it means his job is to catch fish, by communicate he means to make the fish come closer, and by drop them a line he means the fishing rod thread.

Taking the above into account the correct answers are:

A.“communicate” and “drop them a line”

B.The pun plays on a phrase that means both to send a note and to attempt to catch a fish.