He was the designated field marshall who led the USAFFE.*1 pointA. Franklin D. RooseveltB. Douglas MacArthurC. Manuel L. Quezon

To determine who was the designated field marshal that led the United States Armed Forces in the Far East (USAFFE), we can analyze the options provided:

1. Franklin D. Roosevelt - He was the President of the United States during World War II but did not hold a military command role.

2. Douglas MacArthur - He was the Chief of Staff of the United States Army and was designated as the commander of the USAFFE during World War II. MacArthur played a crucial role in the defense of the Philippines and was a significant military leader in the Pacific Theater.

3. Manuel L. Quezon - He was the President of the Commonwealth of the Philippines and not a military leader.

Conclusion

The correct answer is B. Douglas MacArthur, as he was indeed the field marshal who led the USAFFE during the war.