One of the reasons the United Nations was off to a better start than the League of Nations was because _____.

the U.S. Congress and people supported it

all the countries agreed to the policy of isolationism

Woodrow Wilson promoted it

they were preparing for the next World War

Verified Answer :

One of the reasons the United Nations was off to a better start than the League of Nations was because "the U.S. Congress and people supported it," since a majority of US legislators had not approved of the US joining the League of Nations. 

the U.S. Congress and people supported it