Final answer:
From one molecule of triglyceride, three free fatty acids can be obtained which can then be converted into acetyl CoA through β-oxidation to generate ATP during prolonged exercise.
Step-by-step explanation:
When it comes to prolonged duration exercise, one of the energy sources utilized by the body is fat, specifically triglycerides. A triglyceride consists of one glycerol molecule bonded to three free fatty acids (FA). During the process of lipolysis, these triglycerides are broken down which releases the fatty acids. Each of these free fatty acids can then undergo β-oxidation to be converted into acetyl CoA, which enters the Krebs cycle to generate ATP. Therefore, from one molecule of triglyceride, three free fatty acids can be obtained. This is indicated by option C) Three as the correct answer to the question.