Answer:
C. His successful campaigns in North Africa & Sicily.
Explanation:
Dwight D. Eisenhower was a prominent military figure during World War II, and his rise to the position of Supreme Commander of Allied Forces was based on his leadership and success in various campaigns. Let's evaluate each option: Option A suggests that Eisenhower's appointment was due to his conduct in Guam and the Philippines. However, this is not accurate, as Eisenhower was not directly involved in combat operations in these locations during World War II. The key figure in the Philippines was General Douglas MacArthur. Option B credits Eisenhower with a decisive victory at the Battle of Guadalcanal. However, the Battle of Guadalcanal was primarily a Marine Corps operation, and Eisenhower was not involved in this battle. Option C points to Eisenhower's successful campaigns in North Africa and Sicily. This is historically accurate, as Eisenhower was indeed the commander of the Allied forces in the North African campaign, Operation Torch, and the subsequent invasion of Sicily, Operation Husky. These victories were significant in demonstrating his ability to lead large-scale coalition forces and contributed to his later appointment as Supreme Commander. Option D refers to Eisenhower's handling of the Allied offensive at Normandy. While Eisenhower did play a crucial role in the planning and execution of the Normandy invasion (D-Day), his appointment as Supreme Commander of Allied Forces occurred before this event, in December 1943. Therefore, the correct answer is based on his track record prior to the Normandy invasion, which includes his successful campaigns in North Africa and Sicily.