Read the first paragraph of the article.

What is the MOST LIKELY reason for including information about the distance between the Earth and the top of the atmosphere?

A
to illustrate the need for technology to observe the atmosphere from beyond Earth's surface
B
to illustrate the need for rockets that can leave Earth's orbit in order to view the atmosphere from above
C
to highlight how short the distance between Earth's surface and the end of the atmosphere is
D
to highlight how long the distance between Earth's surface and the end of the atmosphere is