A. Speaking formally and addressing his topics seriously
Explanation:
oh nvm I changed my mind.. The answer is :
B. Speaking casually and addressing his topics with humor!
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Is this the whole question??
The first one. The commas are correctly placed. Sorry if this is wrong.
Answer:
2. Any person whose last name begins with the letters A through M should join the first line.
Explanation:
Correct grammar is the use of correct punctuation or the different parts of speech or the subject-verb agreement or even simple things like correct pronouns etc.
Among the given examples, sentence 2 uses correct grammar. This is because 'whose' introduces the relative clause that helps readers understand the possessive nature of the nouns in the sentence.
Thus, the correct answer is option 2.