This is my original answer:
Being a skilled and active reader leads to success. Many jobs involve reading important things. Like a meeting for example. You are also keeping your memory in shape.
If this answer isn’t good enough. Try searching your question up and stating your source.
Answer:
a is 1.
b. is 2.
and c is 3.
BTW, this is not a guess.
Answer:
Black codes were restrictive laws designed to limit the freedom of African Americans and ensure their availability as a cheap labor force after slavery was abolished during the Civil War.