How was the telephone different from the telegraph?
the telephone allowed for instant communication over a distance.
the telephone allowed for voice communication over a distance.
the telephone was generally used only in offices.
the telephone was generally used only by trained operators.

B- The telephone allowed for voice communication over a distance, because the telegraph was almost like texting or sending a letter, not hearing ones' voice.

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Explanation:

The telephone allowed for voice communication over a distance.

Explanation:

Telegraph communication was the first medium that was instant in communications. It transmitted messages by means of electrical impulses that circulated through a single cable by using morse code to decode the messages, but it did not send voice signals, the telephone allowed that, since a telephone converts sound  into electronic signals that are transmitted via cables to another telephone which reproduces the sound.

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