Internal intercostal is referred to the muscle highlighted and is therefore denoted as option A.
What is Internal intercostal?
These are the muscles which are located within the ribs and help to protect internal organs such as lungs.
These muscles also ensure adequate execution of activities such as talking and singing as they are responsible for the expulsion of air from the mouth and nose thereby making it the most appropriate choice in this scenario.
Read more about Internal intercostal muscle here https://brainly.com/question/9491266
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