Question

what is the best definition of an appositive?
a nonrestrictive phrase that modifies a noun
a clause that modifies or explains a noun
a noun or noun phrase that modifies a noun
a noun clause that restricts the meaning of a noun

Explanation:

An appositive is a noun or noun - phrase that renames or modifies another noun right beside it. It can be restrictive or non - restrictive. Options about non - restrictive phrases only, clauses, or restrictive noun clauses are incorrect as they do not fully capture the nature of an appositive.

Answer:

a noun or noun phrase that modifies a noun