2Why does the author describe the different robots scientists are creating with a computer program?

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The author describes the different robots scientists are creating with a computer program "to show a variety of ways that robots could move."

Scientists from Cornell University in New York, are working hard in their laboratories trying to design new robots that look very different from what humans can imagine how a robot looks like.

These scientists have called these robots "softbox." Robots with soft tissue that can move more like a human, with flexible movements, instead of slopy, rigid movements like the ones we see on TV or in the movies.

the answer is b. the tracer looks harmless in flight, but the pilot’s bitten lips and white knuckles suggest how dangerous it can be.