14. The soldiers are issued (infrared) goggles to help them see in the dark.
A. outside visible spectrum
B. creating light by radiating heat
C. emitting light by creating water vapor
D. producing light by adding electrons to a glowing material

I'm stuck between A or B, A? Please help! Thanks

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  1. A is right.

  2. Thank you, Ms. Sue:)

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    posted by boo
  4. ahah

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    posted by yomama

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