20 points! (It says +5/+10 because thats the bonus points you'll get!!! :D What is the author’s primary purpose in writing the selection?

F To provide information about the best locations for chickadees to live in order to survive
G To describe the ways chickadees have adapted to be able to stay alive in cold climates
H To communicate the problems chickadees encounter as a result of their small size
J To explain how the feathers of chickadees function in different environments