Respuesta :
Answer:
The answer is option 2: Sam auditions for the muscat even though he had a screechy, unpleasant voice.
Explanation: This is because commas are placed where natural pauses are in speech and if you say that out loud then after screechy is where you would pause. Also grammarly said that was correct.
Hope this helps.
The sentence that employs punctuation to isolate coordinating conjunctions:
B). Sam auditions for the musical even though he had a screechy, unpleasant voice.
Coordinating adjectives
Coordinating adjectives are described as adjectives that occur consecutively to define or qualify a single subject or noun.
The second option adequately uses a comma to separate the two adjectives 'screechy' and 'unpleasant' that are defining the very noun 'voice.'
The usage of a comma help denotes a pause which helps the readers understand and focus on both the qualities or character traits of the subject.
Thus, option B is the correct answer.
Learn more about "Adjectives" here:
brainly.com/question/11385993