Question

find the error with subject - verb agreement. select the incorrect verb and rewrite the sentence. neither alaska nor florida have a state income tax; however, residents in those states must still pay federal income tax.

Explanation:

In the "neither... nor" construction, the verb agrees with the noun closest to it. Here, "Florida" is singular, so the verb should be "has" instead of "have".

Answer:

The incorrect verb is "have". It should be "has".