A : The imbalance in the concentration of `Na^(+), K^(+)` and proteins generates the resting potential.
R : To maintain the unequal distribution of `Na^(+)` and `K^(+)`, the neurons use electrical energy .

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).
C. If Assertion is true statement but Reason is false, then mark (3).
D. If both Assertion and Reason are false statements, then mark (4).

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that the imbalance in the concentration of sodium ions (Na⁺), potassium ions (K⁺), and proteins generates the resting potential.
- This is true because the resting potential of a neuron is primarily established by the unequal distribution of these ions across the neuronal membrane. There is a higher concentration of K⁺ inside the neuron and a higher concentration of Na⁺ outside the neuron, which creates a voltage difference.

2. **Understanding the Reason (R)**:
- The reason states that to maintain the unequal distribution of Na⁺ and K⁺, neurons use electrical energy.
- This statement is misleading. While it is true that neurons maintain this unequal distribution, they do not use electrical energy for this process. Instead, they use chemical energy in the form of ATP to power the sodium-potassium pump, which actively transports Na⁺ out of the cell and K⁺ into the cell against their concentration gradients.

3. **Evaluating the Truth of A and R**:
- Since the assertion is true (A is true) and the reason is false (R is false), we need to identify the correct relationship between them.

4. **Conclusion**:
- The correct option is that the assertion is true, but the reason is false.

### Final Answer:
- **Assertion (A)**: True
- **Reason (R)**: False
- Therefore, the correct option is: Assertion is true, reason is false.

---