Answer: allowing time to do an after-school activity once studying is done
Explanation: Motivation could be explained as any event, factors or circumstances which increases an individual's willingness, zeal or strength to do something. Motivation could also be inform of incentive or reward which one stands to gain when a certain assignment or mission is accomplished.
However, Intrinsic motivation refers to a class of motivation which are triggered naturally. When a motivation is intrinsic, there is no usually no obvious and or external source of motivation, incentive or reward attached to one's quest of doing something. In the scenario above, all other options except allowing time to do an after-school activity once studying is done have a lucid external incentive which the individual stands or aims to achieve by studying.
