Question 18

Chinese dumplings, or jiaozi can be filled with ginger, scallions, and pork, and needs to be fried to a consistent temperature.

This sentence correctly uses commas to separate elements in a list and to provide additional information about the subject. The placement of commas around "or jiaozi" effectively clarifies that it is an appositive phrase, while the series of ingredients is also properly punctuated.

A) Rashid, I told you that I need to study twice as long as you do if I want a decent grade, on the calculus exam.

This option is incorrect due to the misplaced comma before "on the calculus exam." The phrase should flow without a comma, as it is essential to the meaning of the sentence.

B) Devendra enjoys hockey, he wants to play left defenseman next year.

This sentence is a comma splice, incorrectly joining two independent clauses with just a comma. A conjunction or a period is necessary to correctly separate the two ideas.

C) Nomadic herding and livestock rearing, are but a few types of farming that I'd like to try.

The comma after "rearing" is misplaced, creating an unnecessary pause. The sentence should read without this comma, as it disrupts the flow and clarity of the statement.

D) Chinese dumplings, or jiaozi can be filled with ginger, scallions, and pork, and needs to be fried to a consistent temperature.

This option is correct because it appropriately uses commas to separate the appositive "or jiaozi" and to list ingredients. The structure enhances clarity and maintains the grammatical integrity of the sentence.

Conclusion

Option D is definitively correct as it effectively uses commas to enhance readability and clarify meaning. The other options fail due to improper comma placement or grammatical errors, demonstrating the importance of correct punctuation in sentence structure.