Final answer:
Coenzymes are small organic molecules required for the function of enzymes, often derived from vitamins, while cofactors are inorganic ions like zinc and magnesium that help stabilize enzymes.
Step-by-step explanation:
Coenzymes are organic molecules that often derive from vitamins and are essential for the proper functioning of many enzymes. Unlike coenzymes, cofactors are typically inorganic ions such as zinc, magnesium, potassium, and iron, which help to stabilize enzyme structure and function. Hence, the correct answer to what coenzymes are and what the typical inorganic cofactors are: a) Small organic molecules; Metal ions.