Hello. In the following sentence, should the verb agree with "bananas, apples, eggs" or "food"?<br/><br/>a) Bananas, apples, eggs, that is, natural food, are good for people.<br/><br/>b) Bananas, apples, eggs, that is, natural food, is good for people. [?]<br/><br/>c) Bananas, apples, eggs, that is, natural food is good for people. [?]<br/><br/>Thank you!