What is one reason to keep "them" safe and healthy?
1- Activists want to make their homes in rainforests.
2- Creatures that have homes there can help activists.
3- Rainforests are home to many different creatures.

This would be third person because they are using the correct pronouns that belongs to third person like he, the name, etc

In 2081, everyone is equal not only in the eyes of the law but in every way; nobody is smarter, more athletic, better looking, etc. than anyone else. hazel is of average intelligence, which means she can't think about anything except in short bursts, and george has an intelligence way above normal.

4actions not really sure but that seems the most logical