An infinitive is the basic form of a verb. So the most likely answer is C. I am sorry if this is incorrect but I'm not sure
Answer:
Change "works" to "work".
Change "select" to "selects".
Change "goes" to "go".
Change "likes" to "like".
Change "chooses" to "choose".
Change "takes" to "take".
Changes "grabs" to "grab".
Change "sits" to "sit".
Change "has" to "have".
Change "finishes" to "finish".
Change "shares" to "share".
Change "meets" to "meet".
Change "explain" to "explains".
Change "answer" to "answers".
Change "enjoys" to "enjoy".
Explanation:
Trust me, I am a grammar freak. I hope this helps you!