Kari's science class is studying current world events. she is assigned a 3-page persuasive paper where she must find a topic dealing with something going on in the world. then, she has to either persuade for or against the topic she chooses. which of the following would make a solid thesis for kari's essay?

a. the environment is studied by many different kinds of scientists, from botanists to chemists.

b. cutting down the rain forest hurts the planet because the trees being cut provide clean air.

c. the rain forest is the home for many people, as well as unique species of plants and animals.

d. people who cut down trees are known as loggers, and they work in forests around the world.