Question

coordinating conjunctions
b o y f a n s
but or yet for and nor so
the wind blew through the trees and made a whistling sound.
the wind blew through the trees, and made a whistling sound.
comma no comma

Explanation:

When using the coordinating conjunction "and" to connect two verbs ("blew" and "made") that share the same subject ("the wind"), a comma is not required before "and" in this simple compound predicate structure. The first sentence without the comma is correct for this context.

Answer:

no comma