By the time he was assassinated, robert kennedy a. had decided to run for the us senate. b. was a democratic candidate for president. c. was thinking of becoming the attorney general. d. had agreed to join president johnson’s cabinet.

A is the correct option.

Explanation:

Robert Kennedy was a politician and lawyer. He also served as the 64th US attorney general and also as a senator. He graduated from Virginia school of law. After his brother became the president in 1960, Robert became the attorney general. He fought against organized crime and also worked for African American civil rights. He was an advocate of the poor and opposed the Vietnam war. He was shot while campaigning for the Democratic presidential nomination in Los Angeles.

the quote by walter cronkite contributes to the central idea of the text by supporting the central idea. cronkite argues that what is deemed “right” for and in america may not be good for other countries. this supports the central idea of the text, that the vietnam war was unpopular in america for multiple reasons- including cronkite’s.