American neutrality was tested when this country was attacked in the 1930s ? . a) philippines . b) guam. c)russia. d)china.

Correct answer choice is:

D. China

Explanation:

It began with the Marco Polo Bridge Incident in 1937 during which a conflict between Japanese and Chinese armed forces accelerated into a battle. When the Japanese attack on the harbor in 1941, the war unified with alternative conflicts of warfare II as a serious sector referred to as the China Myanmar Bharat Theater.