Answer:
low supply of oxaloacetate in the citric acid cycle
Explanation:
When there is low supply of oxalo acetate the acetyl CoA gets converted to ketone bodies to enter the TCA cycle.
In the condition of low level of glucose, the supply of oxaloacetate decreases. Thus making it unavailable to react with acetyl CoA, in this condition ketogenesis occur i.e. acetyl CoA gets converted to ketone bodies.
