Question

Which of the Earth’s four spheres is made up of the gases that surround the Earth, and is located at number 1 on the image above? A. the biosphere B. the lithosphere C. the atmosphere D. the hydrosphere

Answer 1

The answer is C.
The only sphere that is entirely made up of gasses (and that surrounds the earth) is the atmosphere. The gasses in the atmosphere are held in place by the gravity of earth.