Answer:
D.) Progressing toward Japan by attempting to take military control of Pacific Islands
Step-by-step explanation:
The Allied pacific campaign was mainly focused on beating back the IJN and army from their territories in the Pacific, and most of the fighting took place on key islands to dislodge the Japanese forces and shrink their territory and access to resources. A big reason that Imperial Japan conquered so much pacific territory was to get access to critical resources like oil, which before the war had largely been imported from places like America. Thus, starving the Empire of their resource base would severely-hamper the Axis war effort.
Island hopping was a popular strategy that the Allies used to save time and resources by only targeting certain islands and setting up bases on others to pin down more-fortified Japanese bases without having to dedicate forces to them, so the Allied fleet could move closer to Japan faster.