Question

i felt happy when:
my grade in my ap class got worse.
i switched to an easier class instead of challenging myself.
i started doing well in my ap class.

Explanation:

To determine when one feels happy, we analyze each option: A worse grade (first option) and switching to an easier class (second option) are less likely to cause happiness related to academic achievement. Doing well in an AP class (third option) is a positive academic outcome that typically brings happiness.

Answer:

C. I started doing well in my AP class.