When Harry S. Truman ran for president in 1948, several factors supposedly were working against him: the media, Republican candidate Thomas E. Dewey's popularity, and Truman's own down-to-earth style.
Explanation:
Colons are used before a list of items, which in this case are the factors working against Harry S. Truman.
The word "rash" means going ahead to do something without thinking it over first. The antonym is the opposite, so the opposite of this would be hesitating. The answer is hesitant.
