Question

what does the bold appositive phrase refer to? maui, a popular chef, is opening a restaurant that only serves ice cream and fruit.

Explanation:

An appositive phrase provides additional information about a noun. Here, "a popular chef" is the appositive phrase, and it gives more details about the noun "Maui" that comes before it. So the appositive phrase refers to Maui.

Answer:

Maui