After World War I, the Japanese military _______.

Awas dismantled by the terms of the Versailles Treaty.
Boutlawed the constitutional monarchy and replaced the emperor.
Ccombined several political parties into one party.
Dreasserted its power and began aggressive military expansion.

Verified Answer :

After World War I, the Japanese military D. reasserted its power and began aggressive military expansion. 
It decided to defend itself, which can be seen in the events of the World War II. 

The correct answer is letter D.

The Japanese started a more aggressive expansion in order to find a region with natural resources, because of Japan's lack of them. The Japanese Military launched invasions to Manchuria and the Phillippines in order to get these resources.