Answer :I need the sentences in able to help you but i can give you some hints..... When you are referring to yourself or someone the word would be with a o at the end sometimes like in this case acabo.
When you are talking to someone you'll say the word acabas.
When your talking about a group that you are including in you'll say acabamos.
And when your talking about someone to someone you'll say acaba
Step-by-step explanation:
Hope this helps! Good luck
The answer is D. acaba