Answer:
C. The lines of competition are clearly defined in the more established industries, unlike the Internet where they are blurred and indistinct, as companies that compete
Explanation:
The first one is also correct, but it is a little bad for reading. D has a spelling error, and "companies competing" in B are a little blurred. All, except last, are correct. However, considering arrangements, the 'C 'option is the best.
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None of it passes through. Most of the light is either reflected by the object or absorbed and converted to heat. Materials such as wood, stone, and metals are opaque to visible light.
Good luck
Answer:
I think its 4 I'm not so sure though
