-- card: 38346 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 2707
-- name: #263
----- HyperTalk script -----
on openCard
  global group,rightone
  put 21 into group
  put "B" into rightone
  pass openCard
end openCard



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Question #21

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2E-12-4.2 What range of frequencies are usually called "audio frequencies"?

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0 to 20 Hz

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20 to 20,000 Hz

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200 to 200,000 Hz

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10,000 to 30,000 Hz

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Correct answer is B