Answer:
Options A, B, and C.
Step-by-step explanation:
Civil Rights Movement was one if not the greatest mass political movement in United States history. It helped problems with different problems African Americans faced such as segregation and discrimination on their basis of the race. The Civil Rights Movement had strong leaders who held many protests throughout the United States and were even arrest for those protests. Three factors that were seen as challenges for the Civil Rights movement were option A "a difference of opinion within rights movement." Some people didn't want to desegrated schools, or to allow African Americans to have some of the luxuries they had. Option C or "lack of public support for school desegregation policies." Again, some Americans didn't want to give African Americans the same luxuries they had which include equal schooling. And of course, option C "opposition to reforms in Congress." Government was very unwilling to hear African Americans pleas and even did unspeakable acts to try to contain the problem, such as assassinating MLK in 1968.
Hope this helps.