I was a little bit confused at first, so I understand what you're suggesting, but I don't think you need to analyze the problem this much. I did not know that insulin increases glucose catabolism, but I did know that beta cells in the pancreas release it in response to high plasma glucose levels. It is also responsible for increasing glycogen storage in the liver and muscles.
You really only needed the "mimic certain insulin responses." Here's what I thought about when eliminating answers:
(A) hexokinase phosphorylates glucose in glycolysis (glucose to G6P). Inhibition of hexokinase would lead to a build up of glucose, since insulin is released in relatively high amounts of during high plasma glucose levels. You would not want to inhibit glycolysis when you have lots of glucose around.
(B) Similar reason for elimination as (A). Phosphofructosekinase phosphorylates F6P to F1,6BP. Inhibition of glycolysis when you have a lot of free glucose is not preferred.
(C) Excess glucose is stored as glycogen in the liver and muscles. Stimulation of glycogen (glucose stores) breakdown does not make sense when you have excess glucose around.
(D) This is the only step that makes sense when you have high levels of glucose: increased metabolism.