I wonder who will win this challenge.which type of sentence is this?interrogative,imperative,assertive,or,optative?

I wonder who will win this challenge.which type of sentence is this?in

1.	I wonder who will win this challenge.which type of sentence is this?interrogative,imperative,assertive,or,optative?
Answer» Declarative SENTENCES, or declarations, convey information or make STATEMENTS. Interrogative sentences, or questions, REQUEST information or ask questions. Imperative sentences, or imperatives, make commands or requests. Exclamatory sentences, or exclamations, SHOW emphasis.