I believe "Mighty" or something related to that word is your answer.
Answer:
1. I can't buy that new dress. All my money is at home.
2. Some people prefer to pay for their stuff by check.
3. I am looking forward to my mom's birthday next May.
4. Whose book is that? Is it yours?
You're right, the answer is caring. :)
The answer is A.Object of a Preposition. c: