Francesca is working on a project where she was tasked to design a hypothetical new visual system. She suggested that the visual system detect ultraviolet (UV) light. Why might this be a bad idea?
A. It passes through objects rather than reflecting from them.
B. It is too abundant at the surface of the earth.
C. Most UV light is blocked by the earth's atmosphere.
D. It travels at too slow a speed.
Answer: C
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