Segregation means that: a. blacks and whites could sit together on buses. b. blacks and whites were seprated c. blacks and whites had to live in different towns

B. Blacks and whites were separated.

Explanation:

There were separate seats for blacks and whites before the Civil Rights Act of 1964, and different public facilities. The black people could not go to the same colleges, sport facilities or restaurants whites entered.  That was segregation.

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the crusaders are identified in the painting;

c. by the red crosses on their backs