Assertion :- Cholesterol confers stability to eukaryotic plasma membrane.
Reason:- Cholesterol is most abundant lipid in plasma membrane.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False
D. If both Assertion & Reason are false.

Answer

To solve the question regarding the assertion and reason about cholesterol and the eukaryotic plasma membrane, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Cholesterol confers stability to eukaryotic plasma membrane." This is a true statement. Cholesterol is known to be an important component of the plasma membrane, where it helps to maintain membrane fluidity and stability, especially at varying temperatures.

**Hint**: Think about the role of cholesterol in maintaining the structural integrity of cell membranes.

2. **Understanding the Reason**:
- The reason states that "Cholesterol is the most abundant lipid in plasma membrane." This statement is false. The most abundant lipids in the plasma membrane are phospholipids, not cholesterol. Cholesterol is present in smaller quantities compared to phospholipids.

**Hint**: Recall the composition of the plasma membrane and identify which lipids are present in greater amounts.

3. **Evaluating the Relationship**:
- Since the assertion is true and the reason is false, we need to determine the correct option based on this evaluation.

**Hint**: Consider how the truth value of the assertion and reason affects the answer choices provided.

4. **Choosing the Correct Option**:
- The correct answer is that the assertion is true and the reason is false. Therefore, the answer is option 3.

**Hint**: Review the answer choices carefully to ensure you select the one that matches your findings.

### Final Answer:
The correct answer is option 3: "Assertion is true and reason is false."