Question

choose the sentence from the excerpt that explains what motivates scientists to study clouds

in part because there are so many of them, these clouds are very effective at reflecting sunlight, she explains. layers of the bright white clouds can stretch for miles. by keeping some of the sun’s energy from reaching earth’s surface, those clouds help keep earth relatively cool.

when most of us see clouds, we see animal shapes, a chance of rain, or maybe a bit of welcome shade. scientists, such as zuidema, see much, much more. for these researchers, clouds are an integral part of the planet, transferring water, dust, and even life around the globe.

Explanation:

The question asks for the sentence that identifies scientists' motivation for studying clouds. The relevant sentence states the key functional role of clouds that drives scientific study, distinguishing it from casual observations of clouds.

Answer:

For these researchers, clouds are an integral part of the planet, transferring water, dust, and even life around the globe.