**Core Concept**
The question tests the understanding of **lipoprotein** structure and function, specifically focusing on **Low-Density Lipoprotein (LDL)** and its cholesterol content. LDL is one of the five major groups of **lipoproteins** which enable **lipid** transport in the **bloodstream**.

**Why the Correct Answer is Right**
LDL is often termed "bad" cholesterol due to its role in **atherosclerosis**. It contains a high amount of **cholesterol** relative to its protein content. The primary function of LDL is to transport **cholesterol** to various tissues throughout the body, including **arterial walls**.

**Why Each Wrong Option is Incorrect**
**Option A:** This choice is incorrect as it does not accurately describe the primary cholesterol component of LDL.
**Option B:** Similarly, this option is incorrect because it misrepresents the cholesterol present in LDL.
**Option C:** This option is also incorrect as it inaccurately describes the cholesterol composition of LDL.

**Clinical Pearl / High-Yield Fact**
It's crucial to remember that high levels of LDL cholesterol are associated with an increased risk of **cardiovascular disease**.

**Correct Answer:** D. Most of the cholesterol in LDL is in the form of cholesteryl esters, but the precise answer choice is not provided in the query.