Awater pollution expert gave a speech at a local gathering. read this excerpt from the speech. what is its purpose? water pollution is a growing threat to our environment. not only does it harm aquatic creatures, but it can lead to serious health problems in humans. when toxic waste from industries is dumped into bodies of water, the pollutants contaminate a variety of fish and shellfish. when consumers eat seafood contaminated by toxins, they risk being exposed to a variety of toxic heavy metals.
answers= a. to inform the audience about how water pollution harms humans and aquatic species
b. to entertain the audience by providing interesting facts about water pollution
c. to convince the audience to adopt a kinder attitude toward harmless sea creatures
d. to move the audience to feel how aquatic animals are vulnerable

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.

option a

Explanation:

to inform the audience about how water pollution harms humans and aquatic species.

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."