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5 votes
Which of the following abbreviations requires the use of one or more periods?

A. Mr
B. NASCAR
C. NASA​

User Herskinduk
by
8.2k points

1 Answer

4 votes
A. Mr.

Because you need at least one period after it. The others typically do not include periods for their abbreviations.
User Bart Whiteley
by
8.1k points
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