The synonym of RECUPERATE is:
A)Recapture
B)Reclaim
C)Recover
D)Regain

Hint: Recuperate refers to coming back to good health.

Complete step-by-step answer:

 To select the correct synonym, that is a word with a similar meaning, it is essential to know the meaning of the given word. The meaning of the word recuperate is to get something back, usually used to refer to receive former strength or health.
Let us take a look at the options given.
Option A, recapture refers to capturing something that was lost. This is referred for something that is material, but health is not something that can be fought and received as a material.
Option B, reclaim refers to get something that was lost, given or paid. This too refers to a material, but heath is not an object.
Option D, regain refers to get back the possession of something, usually a quality or ability that was lost. This is incorrect as it does not refer to heath in particular.
Option C, recover refers to getting back to a normal state of health, strength or mind. This is the word that is closest in its meaning to that of recuperate and is hence the correct answer.

Note: In a situation where the meaning of the given option is not clear, use elimination method and remove the words that you think are least likely to be right, in order to reach the final answer.