Answer:
The erros is c. Kevin and Denise thinks
Step-by-step explanation:
Hi, the error in the sentence is that the verb thinks is not correct and makes no sense.
Kevin and Denise think is the correct form of the verb.
The form "thinks" is used for singular, as Kevin thinks for example.
so, the answer is C. Kevin and Denise thinks.
Feel free to ask for more if it´s necessary or if you din,t understand something.