According to the research, a comma must be used before a coordinating conjunction when this conjunction separates two independent clauses.
<h3>What are independent clauses?</h3>
It is a group of words that contain a subject and a predicate and convey a complete idea.
When a subject of a sentence has two independent clauses, a coordinating conjunction or a comma can be used to separate them.
Therefore, we can conclude that according to the research, a comma must be used before a coordinating conjunction when this conjunction separates two independent clauses.
Learn more about independent clauses here: brainly.com/question/2317165
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