Sentence Correction (SC) | Proponents of monetary rewards that managements

https://gmatclub.com/forum/members/member-615024.html

Can you please help explain how C is correct.
(C) award to employees to prevent them from leaving consider these vital extrinsic
motivation, while critics of the policy condemn these as corporate benefit that help
some workers but debilitate

As per my understanding, condemn these ( rewards) as corporate benefit that helps some workers but debilitates...should be the correct usage.