Which of the following most contributed to the dismissal of General Douglas MacArthur from his command
of UN forces during the Korean War?
A Prisoners of war captured in North Korea accused him of mistreatment
B
He publicly criticized Truman over his decision to avoid nuclear conflict
C Korean soldiers ambushed him and kept him as a prisoner of war
D He failed to successfully land troops at Inchon and was forced to retreat

Option (B). He publicly criticized Truman over his decision to avoid nuclear conflict

Explanation: President Truman relieved General of the Army Douglas MacArthur of his commands after MacArthur made public statements which contradicted the administration's policies. MacArthur was a popular hero of World War II who was then the commander of United Nations forces fighting in the Korean War. General Douglas was known to be the greatest general at that time. He sent a statement to the 51st National Encampment of the Veterans of Foreign Wars in Chicago, it was read out aloud, in which he contradicted Truman's policy towards the island of Formosa, he said "Nothing could be more fallacious than the threadbare argument by those who advocate appeasement and defeatism in the Pacific that if we defend Formosa we alienate continental Asia." President Truman was infuriated by the word "appeasement," and discussed the possibility of relieving MacArthur. Although the statement was however later withdrawn.

step-by-step explanation:

those who allied with france gained land and power.