**Core Concept**
Niacin, also known as Vitamin B3, plays a crucial role in various bodily functions, including energy metabolism and maintaining healthy skin, nerves, and the digestive system. It acts as a precursor to NAD+ and NADP+, essential coenzymes in redox reactions and other cellular processes.

**Why the Correct Answer is Right**
Niacin works by inhibiting the enzyme hepatic lipase, which breaks down high-density lipoprotein (HDL) cholesterol and triglycerides in the liver. By reducing hepatic lipase activity, niacin increases HDL cholesterol levels and reduces LDL cholesterol levels, thereby exerting a favorable effect on lipid profiles. Additionally, niacin can also reduce triglyceride levels by inhibiting the release of free fatty acids from adipose tissue.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the primary mechanism of action of niacin.
**Option B:** This option is incorrect because it refers to a different class of drugs, statins, which work by inhibiting HMG-CoA reductase.
**Option C:** This option is incorrect because it describes the action of omega-3 fatty acids, which reduce inflammation and improve cardiovascular health.

**Clinical Pearl / High-Yield Fact**
Niacin is often used as a second-line treatment for hypercholesterolemia and is particularly effective in patients with low HDL cholesterol levels.

**Correct Answer:** C.