Choose illustration for broadcast (4)
I believe the answer is:
pick
'choose' is the definition.
(I know that pick is a more specific form of the action choose)
'illustration for broadcast' is the wordplay.
'illustration' becomes 'pic' (short for picture).
'for broadcast' indicates a 'sounds like' (homophone) clue.
'pic' is a homophone of 'PICK'.
(Other definitions for pick that I've seen before include "flower" , "tool - it breaks" , "Choose, select" , "Select - ground breaker" , "tool for breaking rocks" .)