What led to the decline of the civil rights movement in the late 1960s?A) The Democratic National Comvention rejected the demands of the...

The best of these answers is C.  The assassination of Dr.
King and the leadership vacuum that it left was a major factor in the demise of the
civil rights movement.

Over the years, Martin Luther King,
Jr. became the face of the civil rights movement.  Whites came to identify him as the
leader of the movement and came, in many cases, to trust him.  Many blacks looked up to
him as the most effective leader that they had.  No other figure in the black community
had as much credibility with blacks and whites.  Therefore, when King was killed, the
movement was hit very hard.  There was no longer a leader who could keep it together
and, at the same time, get white support.

However, I would
argue that the movement was declining anyway and that King's death only hastened that
end.  All the goals that white America could really agree with had been achieved and the
movement was going to have a hard time moving forward.

But
that is not one of your options so the best answer is C.