The author mentions Berry's solo in "Oh, Lady Be Good" primarily in order to:
A illustrate why most people haven't heard of Berry.
contrast Berry's later work with Berry's early work.
provide an example of Berry's musical excellence.
Destablish that Berry's solo was better than Count Basie's.
B

you didn't list the options but im guessing it's resolving contradictions

educational segregation in the us prior to brown.

the members of the u.s. supreme court that on may 17, 1954, ruled unanimously that racial segregation in public schools is unconstitutional.

judgment and order of the supreme court for the case.

u.s. circuit judges robert a. katzmann, damon j.

the u.s. supreme court's decision in brown v. board of education marked a turning point in the history of race relations in the united states. on may 17, 1954, the court stripped away constitutional sanctions for segregation by race, and made equal opportunity in education the law of the land.

when in the second paragraph fourth sentence it says "if youre" it should be "if you're"