Correct option is C
The correct substitution of the highlighted words is (c) is here.
Explanation: The word “None” is often treated as singular when it refers to “not one,” especially with uncountable or singular concepts. Since “None of them” implies “Not one of them,” a singular verb (“is”) is required.
Grammatical rule used:
· “None” can be singular or plural, but when referring to individuals not being present (like “None of them is here”), singular verb is preferred.
· Example: None of the cake is left.