The atmosphere contains the earth's landforms water systems life forms air

The atmosphere is the area surrounding planets filled with gases and in the case of our planet the mixture of gasses is called "air" - here "air" is the correct answer.

It might also (occasionally) contain life such as when birds are flying and water - but not all of Earth's water or life.

The answer is d if you are on edgenuity. 

Answera discharge of static electricity;