C - Beautiful antique instruments renames guitars
Appositives are nouns or noun phrases that renames another noun beside it. The phrase 'beautiful antique instruments' renames and is right beside 'guitars' as it is describing them.
The effect of the simile in this passage makes the passage more interesting and gives it that extra "boost" to help the reader understand what is going on.
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Answer:
Historical communication took longer, modern communication took less time and is easier to send
Explanation: