Why did we choose to attack guadalcanal

The Guadalcanal campaign was a significant strategic combined arms Allied victory in the Pacific theater. Along with the Battle of Midway, it has been called a turning-point in the war against Japan. The Japanese had reached the peak of their conquests in the Pacific. The victories at Milne Bay, Buna-Gona, and Guadalcanal marked the Allied transition from defensive operations to the strategic initiative in the theater, leading to offensive operations such as the Solomon Islands, New Guinea, and Central Pacific campaigns, that eventually resulted in Japan's surrender and the end of World War II.

(d) it was complex and capable of highly organized efforts.