The correct answer is 2. Island Hopping
Step-by-step explanation:
The General Douglas MacArthur was a Army General in the U.S. mainly known for leading and supporting the operation "Leapfrogging" or " Island hopping" that took place during the Pacific war from 1941 to 1945, which was a war between the allies including the U.S., China, Philippines, India, among others against Japan, Thailand, Italy, and Germany during the Second World War. This military tactic led by the allies aimed at taking control of some of the islands in the Pacific that could help them to invade and attack the more important island in Japan by using submarines and airplane attacks. It is believed this tactic was proposed by General MacArthur who also lead the attacks in the south, as he aimed at regaining the Philippines as this had been invaded by Japan. Thus, the tactic that General Douglass MacArthur used in the Pacific was the "Island Hopping".