RECUPERATE :

Answer: Option B

Rehabilitate : restore (someone) to health or normal life by training and therapy after imprisonment, addiction, or illness.
Reimburse : repay (a person who has spent or lost money).
Relocate : move to a new place and establish one's home or business there.
Recover : return to a normal state of health, mind, or strength.
Recuperate : recover or regain (something lost or taken).

Synonym of Recuperate is Recover.