The air in the thermosphere becomes thinner and thinner until it fades into space. True or false

True:

There are no clear dividing lines. Each layer blends into the layer above it and the layer below it. Scientists are sure that the atmosphere becomes thinner and thinner farther from the Earth's surface, until it finally fades off into space.

The correct answer would be lost aquila

The answer is c) people evacuated but almost all returned