Question

what does the bold appositive phrase refer to? the olympic gymnast andy flipper just did a handspring across moanas dinner table.

Explanation:

An appositive phrase renames or identifies the noun it is next to. Here, "Andy Flipper" is the appositive phrase for the noun "The Olympic gymnast", so it refers to the Olympic gymnast (specifically naming the gymnast as Andy Flipper).

Answer:

The bold appositive phrase "Andy Flipper" refers to "The Olympic gymnast" (it is the name of the Olympic gymnast).