Question

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6. What punctuation mark is used at the end of an abbreviation?
O A. Comma

Answer 1

The punctuation mark used at the end of an abbreviation is a period.

Step-by-step explanation:

The punctuation mark used at the end of an abbreviation is a period. For example, the abbreviation for 'etcetera' is 'etc.', where the period is used to indicate the end of the abbreviation. This is a common practice in written language and helps to distinguish abbreviations from regular words.

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