Question

fix any errors with subject - verb agreement below. click submit answer if there are none. edna krabappel, in addition to her best buddy alejandro, happen to enjoy household chores.

Explanation:

The subject is Edna Krabappel (a singular noun). "In addition to her best buddy Alejandro" is a pre - posal phrase and doesn't affect subject - verb agreement. So the verb "happen" should be in the singular form "happens".

Answer:

Edna Krabappel, in addition to her best buddy Alejandro, happens to enjoy household chores.