Answer:
A. Many adults try to take credit for things they have not yet accomplished.
Step-by-step explanation:
In the book, it says, "When I hear people boasting of a work as yet undone, and trying to anticipate the credit which belongs only to actual achievement..."
This states that he sees adults around him bragging or "celebrating" something that isn't finished or even started.
I also did the test just now and I got the answer right.
Sorry for being so late! But hopefully this helps others! :D