Question

flub has the same or almost the same meaning as: calm down think back mess up cheer up

Explanation:

The word "flub" means to make a mess of or bungle something. "Mess up" has a similar meaning, referring to making a mistake or causing disorder. "Calm down" means to become less excited or agitated. "Think back" is about recalling past events. "Cheer up" is to become happier or to make someone happier.

Answer:

C. mess up