Question

every country around the world has a flag. the american flag is red, white, and blue. it has stars and stripes. the american flag stands for the united states.
which of these is the american flag?

Explanation:

The text states the American flag is red, white, blue, with stars and stripes. The middle flag matches this description.

Answer:

The middle flag (the one with blue field of white stars and red-and-white horizontal stripes)