The "credibility gap" was a term used frequently in journalism, and with public and political discourse during the 60s and 70s. It was used mostly to describe the people's skepticism about Lyndon B. Johnson's administration's statements and policies about the Vietnam War. So I believe your answer is B.
I would say C.) The Kennedy Assassination. The meaning of "credibility gap" is What is said to have happened or that what is true. WWII actually happened and there is nothing wrong with that one. The Vietnam War actually happened and has evidence to how that went down. The Civil Rights Movement was a really big historical event that affected america as we know, so that is not the correct one. The Kennedy Assassination had a lot of theories and beliefs to what actually happened. In short words, the answer is " C.)The Kennedy Assassination."
The U.S. Confederation Congress decided in 1787 that the Northwest Territory would eventually become "new states in the Union," since this was the first time the Us government had ever designated land for such a purpose.
