You're answer is going to be C
Joe Biden is the current Vice President of The United States.
It was a way for them to get jobs. If a former slave was educated, it could mean a new beginning for them. On the other hand if a slave was uneducated, they would not have enough money for stable living requierments. So it was very important to be educated because you could start a new life.
D, I believe. Supply and demand usually determines the prices of things.
