Final answer:
In the late '60s, the civil rights movement changed with option B. the emergence of more militant black leaders, option C. additional laws passed by Congress to remove loopholes, and option D. a lack of complete unity among black leaders.
Step-by-step explanation:
The civil rights movement changed in the late '60s in several ways:
- Many black leaders began to take a more militant approach to civil rights, such as Malcolm X and the Black Panthers. They favored more immediate action to prevent oppression and protect their communities.
- Congress passed additional laws to remove loopholes, including the Civil Rights Act of 1968, which aimed to prevent housing discrimination.
- Black leaders were not completely united with one voice, as different groups and leaders had different approaches and goals.