Group of seven stars making right personal trainer choice (6)
I believe the answer is:
option
'choice' is the definition.
(I know that choice can be written as option)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for option that I've seen before include "Freedom to choose" , "The choice of taking or leaving" , "Right to choose" , "Thing that may be chosen" , "Preference" .)