Question

Supply a verb in agreement to its subject:
Either title ______ age-appropriate, but I suggest the former.

• A. is
• B. are
• C. come
• D. go

Answer 1

The correct option is A is

It is to be kept in mind that Either, Neither, Each, Everyone, Many a, must be followed by a singular verb.
'Either title' means each individual title. So, we are referring to a singular noun. By the general convention, a singular noun takes a singular verb. Hence, Option A 'is' is correct and Option B 'are' is wrong.
Options C and D are wrong because they are irrelevant to the context.