Neither of your grandfathers ___ typical hobbies.
C. either of the above
Answer and Explanation
This is another subject-verb agreement question, and another of those tricky ones where it's hard to spot the verb's subject. This is important because in order to make the verb agree with its subject, you have to know what the subect is, right?
Well, it's not grandfathers, because grandfathers is the object of the preposition of (a noun can't function as an object and a subject at the same time). That means the subject is the pronoun neither. And neither, like either, is always singular and requires the singular verb, has.
Don't be fooled by hobbies either. That's the object of the verb, and objects don't effect the verb's number.
The correct answer is A.