Final answer:
Winston Churchill opposed the Munich Pact because he believed the policy of appeasement would lead to war rather than prevent it.
Step-by-step explanation:
Winston Churchill opposed the Munich Pact (a). At a conference held in Munich in 1938, Britain, France, and Italy agreed to allow Germany to annex certain areas of Czechoslovakia in a policy of appeasement aimed at preventing war, a decision Churchill famously criticized for choosing dishonor that would later lead to war. Churchill, however, supported the other options mentioned: he was a key figure in the formulation of the Atlantic Charter with Roosevelt, which aimed to defend freedom and democracy against fascism; he did not oppose the Lend-Lease Act, which facilitated US support to Britain in resisting Nazi Germany; and he was not against the Treaty of Versailles during its time as it was drafted after World War I and before his opposition to the Munich Pact.