What was america's initial strategy during wwi?

To send American soldiers to the place where WWI was to help and solve the war.

up until just before the U.S. declared war on April 6th, 1917, the U.S. had desperately tried to stay neutral, but ties to Britain, propaganda, the sinking of ships by German U-boats, and a German attempt in the Zimmermann Note to get Mexico to declare war on the U.S. pushed the U.S. to getting involved.

so the initial strategy was to stay out of it

the correct answer is

d) rocket launcher