Choose cape shunned by African Christian (3)
I believe the answer is:
opt
'choose' is the definition.
(both can mean to pick something)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for opt that I've seen before include "Prefer, choose" , "Choose from pot" , "Decide between possibilities, choose" , "Elect" , "Plump for" .)