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Discussion

A fax machine works by scanning each outgoing page, turning the image into a series of light and dark dots. This pattern is then translated into audio tones, and sent over regular phone lines. The receiving fax "hears" the tones, pieces the grid together, and prints the total number of dots_____________.

  • A.He invented a machine capable of receiving signals from a telegraph wire
  • B.They were an easy way to send documents to any phone number
  • C.The resulting document is a black and white copy of the original page
  • D.Then he finally managed to translate these symbols into images on paper

Answer: C

Correct answer: The resulting document is a black and white copy of the original page

The paragraph traces the process from scanning to printing, and the blank is its last step, so it must state the outcome. A page reduced to light and dark dots and reprinted is a black and white copy. The other options introduce an inventor the paragraph never mentions.

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