Answer:
d. Intrinsic
Explanation:
An Intrinsic feeling is felt when someone engages in an activity because he/she is driven by internal rewards.
This means that a person engages in an activity for the satisfaction he/she derives from such an activity, and not because of the reward he/she wants, or the punishment he/she wants to avoid.
An example has been given in the question above, another example is when a person learns a new language because he/she enjoys it.