(A) strategic bombing
(B) saturation bombing
(C) island seizing
(D) ** island hopping
EXPLANATIONS BELOW
Concept note-1: -Leapfrogging, also known as island hopping, was a military strategy employed by the Allies in the Pacific War against the Empire of Japan during World War II.
Concept note-2: -During the Pacific war, the U.S. Navy employed a Corbettian strategy in its campaign across the Pacific to Japan, as evidenced by submarine operations, amphibious warfare and the use of airpower.
Concept note-3: -The Japanese would use the terrain to slow the American advance, and the Japanese would attempt to bleed the Allied Naval forces. The American forces would conduct a massive artillery barrage followed by a sweeping maneuver to take the island. The Navy would defend the sky and support the American advance.