Answer:
The purpose of the expert is to inform the audience about how water pollution harms humans and aquatic species.
Explanation:
The information that the expert is providing shows specific examples of how though incorrect practices the water has become dangerous for people and the species that live in it. The excerpt has an informative purpose it doesn't try to convince anyone to do or accept anything but it tries to make people see the reality about the world and the dangers we are living now.
C. Is the correct answer. I believe.
College is a lot of money, which most people don't have that much money. If you get a scholarship then it's like all your problems go away. For the lower-class people, they need to work harder than the higher-class because they don't have the same privileged as the others. When you don't have the same privilege as others you need to work harder than the others.