Genuine person who's the obvious choice (7)
I believe the answer is:
natural
'genuine' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for natural that I've seen before include "Genuine, unaffected" , "Additive-free" , "Innate -- unprocessed" , "Not man-made; off-white" , "Uncultivated" .)