**Core Concept**
LDL (Low-Density Lipoprotein) is a type of cholesterol-carrying lipoprotein in the blood, often referred to as "bad" cholesterol. It plays a crucial role in the development of atherosclerosis by depositing cholesterol in the arterial walls.

**Why the Correct Answer is Right**
LDL is synthesized in the liver and is primarily responsible for delivering cholesterol to peripheral tissues. The process of LDL formation involves the assembly of apolipoproteins, phospholipids, and cholesterol in the endoplasmic reticulum of hepatocytes. The resulting LDL particles are then secreted into the bloodstream, where they can bind to LDL receptors on the surface of various cells.

**Why Each Wrong Option is Incorrect**
* **Option A:** This statement is incorrect because LDL is not the primary carrier of triglycerides in the blood. Very Low-Density Lipoproteins (VLDL) are responsible for transporting triglycerides from the liver to peripheral tissues.
* **Option B:** This statement is incorrect because LDL is not the primary component of High-Density Lipoprotein (HDL). HDL is composed of apolipoproteins, phospholipids, and cholesterol, but it is primarily involved in the reverse transport of cholesterol from peripheral tissues to the liver.
* **Option C:** This statement is incorrect because LDL is not primarily involved in the transport of HDL. HDL is synthesized in the liver and is primarily involved in the reverse transport of cholesterol from peripheral tissues to the liver.

**Clinical Pearl / High-Yield Fact**
LDL levels are a critical risk factor for the development of cardiovascular disease. The National Cholesterol Education Program recommends that LDL levels be reduced to less than 100 mg/dL in patients with cardiovascular disease or diabetes.

**Correct Answer: B. HDL is primarily composed of apolipoproteins, phospholipids, and cholesterol.