The correct hand! (5)
I believe the answer is:
right
I believe this clue is a double definition.
'the correct' is the first definition.
(right can mean correct)
'hand?' is the second definition.
(I know that right is a type of hand)
(Other definitions for right that I've seen before include "Correct; political wing" , "licence" , "Privilege" , "A person is entitled to it" , "Prerogative" .)