Question #N726

The most common punctuation error that occurs in this type of writing is a comma splice. A comma splice is a comma used incorrectly to separate two complete sentences without a conjunction. This is incorrect because a comma cannot be used in this way to join two complete sentences. What is the main reason why this is a punctuation error?

The main reason why a comma splice is a punctuation error is that
A. it creates a run-on sentence.
B. it results in a phrase that’s too long.
C. it makes the writing too formal.
D. it makes the writing too casual.