Final answer:
Commas should be placed before conjunctions that join independent clauses. The correct sentence is: 'Mrs. Morin enjoys reading, but she likes writing even more.' Commas influence the rhythm and pacing of text, contributing to clarity and meaning.
Step-by-step explanation:
The question regarding the placement of commas can be classified under the field of English punctuation and is often encountered at a high school level. The comma placement in the provided sentence should be after the conjunction 'but' since it introduces an independent clause. Therefore, the correct sentence would be:
Mrs. Morin enjoys reading, but she likes writing even more.
When considering sentence structure and the rules of punctuation, commas serve to separate elements within a sentence, provide clarity, and indicate pauses.
They are used before conjunctions that join independent clauses, after introductory phrases, and in a series or list. In the context of the poetic line and breath, commas influence the rhythm and pacing of how the text is read, adding different layers of meaning or emphasis to the written word.