Multiple choice includes repetition (4)

I believe the answer is:

echo

'repetition' is the definition.
(I know that echo is a type of imitation)

'multiple choice includes' is the wordplay.
'includes' says the answer is hidden in the clue.
'ECHO' can be found hidden inside 'multiple choice'.

(Other definitions for echo that I've seen before include "She loved Narcissus - it's recalled" , "Resound; (radar) return" , "Repetition of sound" , "A natural sound reflection" , "Close imitation" .)

I've seen this clue in The Guardian.

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