Final answer:
The correct sentence is B. George, would you please write the alphabet on the board? It has proper use of commas.
Step-by-step explanation:
The correct sentence is B. George, would you please write the alphabet on the board?
This sentence is punctuated correctly because it has the proper use of commas. The name 'George' is set off by commas as an appositive, and the phrase 'would you please write the alphabet on the board?' is also set off by commas as an interrupter.
Incorrect punctuations in sentences A and C make them grammatically incorrect. In sentence A, there is an unnecessary comma after 'write' and an unnecessary comma before 'the alphabet on the board'. Sentence C is missing the necessary commas before and after 'George'.
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