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In this channel of communication, messages are carried by sound and light waves. a. teleconference b. face-to-face c. voicemail d. hard copy memos
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In this channel of communication, messages are carried by sound and light waves.

a. teleconference
b. face-to-face
c. voicemail
d. hard copy memos

User Milo Christiansen
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1 Answer

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Teleconference always. Voicemail in the rare case where there is a modulated light segment somewhere in the path.
User Pega Wega
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