Read the following paragraph from the section “Remote Sensing Instruments.”

Thermometers, barometers, and other instruments are essential to exploring the immediate atmosphere where humans exist. But what if scientists want to explore how the atmosphere might act hours or days into the future, or in another part of the world? For this, scientists depend on remote sensing instruments--tools that obtain information from some distance away.

What is the MAIN reason why the author includes this paragraph in the article?

A
to explain how technology works best when it observes the atmosphere from far away
B
to explain how technology has become more advanced since the thermometer was invented
C
to highlight how remote sensing instruments are more advanced than thermometers and barometers
D
to highlight how different technologies are needed to measure different parts of the atmosphere