Select — option (6)
I believe the answer is:
choice
I believe this is a double definition.
'select' is the first definition.
(I know that select can be written as choice)
'option' is the second definition.
(I know that option can be written as choice)
(Other definitions for choice that I've seen before include "Sophie's ---, William Styron novel" , "Variety" , "Pick" , "'Selection, option (6)'" , "'Option, alternative (6)'" .)