Choose the option corresponding to the word or phrase that expresses the meaning most fluently and logically. In each case, the first choice represents no change from the original text.
I’m sorry. Neither Bob nor Juan are able to come to the phone right now.
a. are able to come
b. are going to able to come
c. is able to come
d. could come
C: The subject of this sentence is either Bob or Juan, but not both. Two singular subjects connected by either/or or neither/nor require a singular verb. Since the singular form of the verb “to be” is “is,” Choice C is correct.