What Events Prompted the Passage of the 1968 Civil Rights

What events prompted the passage of the 1968 Civil Rights Act?

A) John F.Kennedy's assassination and the subsequent urban uprisings
B) the passage of the Voting Rights Act and the election of Lyndon B.Johnson
C) the assassinations of John F.Kennedy and Martin Luther King,Jr.
D) the assassination of Martin Luther King,Jr. ,and the subsequent urban uprisings