Final answer:
Completing a 10K does not promote ketogenesis; instead, circumstances like prolonged fasting, uncontrolled diabetes, and a fat protein diet do, as these conditions necessitate shifting to fat as the primary energy source.
Step-by-step explanation:
The student asked which of the following would NOT promote ketogenesis: a prolonged fast, uncontrolled diabetes, someone on a fat protein diet, or at the end of a 10K. Ketogenesis is the process of creating ketone bodies from the breakdown of fatty acids and occurs when the body has inadequate glucose for energy and switches to fat as the primary energy source. Prolonged fasting, uncontrolled diabetes, and a fat protein diet all promote ketogenesis. However, moderate physical activity, like completing a 10K (a relatively short-term exercise), generally does not promote ketogenesis, as the body primarily uses glycogen stores for energy and is unlikely to switch to ketone production for a short period.