What is the only organ that does NOT require insulin for glucose to enter its cells?

In _______ the volunteers at the New York Mutual Hook and Ladder Company No. 1 voted to purchase a horse to pull their pump engine

Fill in the blank(s) with correct word

An elderly man is found unconscious in his kitchen. The patient's wife tells you that her husband has diabetes and that he took his insulin, but did not eat anything. You should suspect

A. ketoacidosis B. diabetic coma C. hypoglycemia D. hyperglycemia