Pro choice? (3)
I believe the answer is:
yea
'pro choice?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for yea that I've seen before include "MP's 'Yes' vote" , "-- or nay?" , "Affirmative in the British Parliament" , "Approval" , "Aye; aye (anag.)" .)