Antonym of DEFECTION

A. resignation

B. invitation

C. joining

D. co-operation

Answer: Option C

Solution(By Examveda Team)

Defection : the desertion of one's country or cause in favour of an opposing one.
Resignation : an act of resigning from a job or office.
Invitation : a written or verbal request inviting someone to go somewhere or to do something.
Joining : link; connect.
Co-operation : the action or process of working together to the same end.

Antonym of Defection is Joining