Question

what kind of sentence is this?
what type of training and experience do you need to become a referee?
declarative exclamatory interrogative imperative
submit

Explanation:

An interrogative sentence asks a question. The given sentence "What type of training and experience do you need to become a referee?" is asking for information, so it's interrogative. Declarative makes a statement, exclamatory shows strong emotion, and imperative gives a command.

Answer:

interrogative