The reason that we receive education is so that we can get jobs and invent new things. If the people during the Industrial Revolution did not have any knowledge they would not have been able to create any of the inventions that were made. Therefor, the US and many other places inspired by these inventions would be completely different. This is just an example.
I hope this helps!
D. Would you be interested in a discount in exchange for filling out this survey?
The second one, “He is selfish”
I am not certain, but i would say the correct answer is B.
A lacks a comma between hours and we and C shouldn't have a comma between food and so.