Answer: Karl Schwarzschild uses Einstein’s ideas about space bending to conclude that black holes are possible. Karl Schwarzschild uses Einstein’s ideas about imagination to conclude that it is more important than knowledge.
Excerpt:
Einstein's idea of gravity had big consequences. It helped explain some observations that Newton's idea didn't account for. It also opened our minds to amazing new possibilities. For example, taking his cue from Einstein's idea that space bends, scientist Karl Schwarzschild began to think about what would happen if a place in space were extremely distorted. His answer: light would follow the hyper-bent space, never to turn away from it. This was the first prediction of a black hole. At first, some scientists (including Einstein!) rejected Schwarzschild's ideas. Others were intrigued and began searching the skies for real black holes. Just decades later, they found the first of them. It just goes to show: sometimes, as Einstein himself once said, "Imagination is more important than knowledge."
Explanation:
The excerpt is about the new possibilities that Eistein's idea created. Karl Schwarzschild's conclusion is as a result of imagining the effect of space bending. The <u>key idea</u> of the excerpt starts from the fourth sentence, and this sentence starts with "<em>for example,</em>" which in turn refers to an example of how Einstein's idea opened our minds to amazing new possibilities.
According to the information given, Karl Schwarzschild did <u>not</u> find any fault in Newton’s ideas. Also, Einstein had a theory that space bends, this was <u>not</u> Karl Schwarzschild's idea or conclusion.
The correct answer is: Karl Schwarzschild uses Einstein’s ideas about space bending to conclude that black holes are possible.
