**Core Concept**
LCAT (Lecithin-Cholesterol Acyltransferase) is an enzyme that plays a crucial role in the formation of cholesteryl esters in the plasma. It is involved in the maturation of high-density lipoprotein (HDL) particles and the removal of excess cholesterol from peripheral tissues to the liver for excretion.

**Why the Correct Answer is Right**
LCAT deficiency leads to an accumulation of unesterified cholesterol in the plasma, which in turn increases the levels of free cholesterol. This results in an imbalance in the cholesterol distribution within the HDL particles, leading to an increase in the levels of free cholesterol. The increased free cholesterol levels can lead to an accumulation of cholesterol in peripheral tissues, promoting the development of atherosclerosis.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as LCAT deficiency does not directly increase the levels of triglycerides. While there may be an indirect effect on triglyceride metabolism, it is not the primary consequence of LCAT deficiency.
* **Option B:** This option is incorrect as LCAT deficiency does not directly increase the levels of LDL (low-density lipoprotein) cholesterol. However, the accumulation of free cholesterol can lead to an increase in LDL production and clearance, but this is not the primary effect of LCAT deficiency.
* **Option C:** This option is incorrect as LCAT deficiency does not directly increase the levels of VLDL (very-low-density lipoprotein) cholesterol. While there may be an indirect effect on VLDL production, it is not the primary consequence of LCAT deficiency.

**Clinical Pearl / High-Yield Fact**
LCAT deficiency is a rare genetic disorder that can lead to an increased risk of atherosclerosis and cardiovascular disease. It is often associated with elevated levels of free cholesterol and decreased levels of HDL cholesterol.

**Correct Answer:** C.