"A. My new brother in law is also my son's art teacher" contains an error. "Brother-in-law", like Maid-of-honor should have two hyphens in it--on either side of the word "in".
Dred Scott v. Sandford (1857) ...
Civil Rights Cases (1883) ...
Plessy v. Ferguson (1896) ...
Powell v. Alabama (1932) ...
Shelley v. Kraemer (1948) ...
Brown v. Board of Education of Topeka (1954) ...
Heart of Atlanta Motel, Inc. v. United States (1964) ...
Loving v. Virginia (1967)
I believe the answer would be B
As the nation's identity has grown and changed over time, that growth and change is reflected in American literature.