Which medication is often associated with managing cholesterol levels?

The choice of Lipitor is correct because it is a brand name for atorvastatin, a medication specifically used to lower cholesterol levels in the body. Atorvastatin belongs to a class of drugs known as statins, which work by inhibiting an enzyme involved in the cholesterol production in the liver. This results in decreased levels of low-density lipoprotein (LDL) cholesterol, commonly referred to as "bad" cholesterol, which is beneficial for reducing the risk of heart disease and stroke.

The other options do not relate to cholesterol management. Neutrophilia refers to an increase in neutrophil white blood cells, often indicating infection or inflammation. Hypercapnia relates to elevated levels of carbon dioxide in the blood, which is not relevant to cholesterol levels. Exacerbation generally refers to the worsening of a condition or symptoms, which does not pertain to the management of cholesterol specifically. Thus, Lipitor stands out as the medication specifically indicated for cholesterol regulation.