Answer:
C) Pieces- A puzzle is made of many small pieces that break apart easily.
Step-by-step explanation:
The joke is that you can't trust a jigsaw puzzle because they are well-known for falling to pieces. The term "falling to pieces" means that you are losing yourself and your mental/emotional stability, and since jigsaw puzzles are mentioned to have small parts that break easily, the pun is that the phrase has been implied in a literal context.