Answer:
1. D. Tense agreement.
2. B. Subject verb agreement.
Explanation:
1. In the given sentence "The boys will ride their bikes to the park and played ball", the error is in the tense agreement. Since the verb in the first place is "will+verb" form, so will the second verb be in the same form. The tense of the verb must be consistent in the whole sentence. So, the use of the 3rd form of the verb "played" is wrong.
2. In the sentence "the students takes a quiz every Monday and Wednesday" the verb "takes" is wrong as the sentence is talking about a recurring action that is happening every week. Thus, the error is in the subject-verb agreement.
