Final answer:
The correct verb to complete the sentence about what Jason does with his pet bunny every day is 'plays', adhering to subject-verb agreement in the present tense for singular subjects.
Step-by-step explanation:
The correct verb to complete the sentence "Jason __________ with his pet bunny every day." is B) plays.
We know this because the subject 'Jason' is singular, and according to the rules of subject-verb agreement in simple present tense, the verb must also be in its singular form, which includes the addition of an '-s' or '-es' to the base form. As such, 'plays' is the correct form to use with the singular subject 'Jason'.