The sentence which contains a comma splice is "the line for coffee was really long, Burton wasn't surprised to see a parking ticket on his windshield when he got back to the car.".
According to the given question, we are asked to state the sentence which contains a comma splice from the list of available options. We can see that the correct answer is option D and there are two independent clauses which are separated by a comma.
As a result of this, we can note that a comma splice occurs when there is the use of a comma to link or join two independent clauses in a sentence. We should note that an independent clause is one that cannot make any meaning when it stands on its own.
Therefore, the correct answer is option D
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