Final answer:
It is true that using a comma before conjunctions like 'and', 'so', or 'but' can clarify sentences when they join two independent clauses. Editing for more effective sentences includes proper punctuation to avoid run-ons and improve readability.
Step-by-step explanation:
When connecting longer stretches of thought using conjunctions like 'and', 'so', or 'but', it is often a good idea to create a comma before these coordinating conjunctions when they join two independent clauses. In English grammar, this use of commas helps to clarify the separation between complete thoughts and prevents the creation of run-on sentences. As per the guideline, you should only connect two independent clauses per sentence utilizing one of the seven coordinating conjunctions, remembered by the acronym FANBOYS (for, and, nor, but, or, yet, so).
Editing for more effective sentences often requires recognizing when to use these punctuational elements properly. The aim is to enhance readability and ensure that the sentence structure properly conveys the intended meaning without generating confusion or making the text seem like a run-on sentence. Run-on sentences can be revised by adding a comma and a coordinating conjunction, separating the sentences with a period, a semicolon, or a semicolon and a transitional word or phrase, or by converting one of the independent clauses into a subordinate clause.
Remember that when a conjunction connects two verbs, adjectives, or nouns within a single independent clause, commas are not usually necessary unless special emphasis is desired. Further editing and revising may include using transitional words or phrases to shorten long sentences and improve the logical flow of ideas, making the overall writing clear and coherent.