Answer:
Bob did the absolute wrong thing. Any item found on the ground, regardless of what it is, is not yours. In this example, Bob found money at a gas station. Chances are high that somebody dropped it by mistake after paying for gas. The right thing to do would have been to give the cash to the cashier.
I'm not sure if there were specific answer choices but using complex words actually makes your statement rather unclear, especially assuming they are words the average person wouldn't know or understand.
The answer is A because it has a comma and they are excited about their trip