Assertion: Among `Br^(-)`, `O_(2)^(2-)`, `H^(-)` and `NO_(3)^(-)`, the ions that cannot act as oxidising agents are `Br^(-)` and `H^(-)`.
Reason: `Br^(-)` and `H^(-)` cannot be reduced.

Options

A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1
C. Statement-1 is True, Statement-2 is False.
D. Statement-1 is False, Statement-2 is True.

Explanation

To solve the assertion and reason question, we need to analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that among the ions `Br^(-)`, `O_(2)^(2-)`, `H^(-)`, and `NO_(3)^(-)`, the ions that cannot act as oxidizing agents are `Br^(-)` and `H^(-)`.

2. **Identifying Oxidizing Agents**:
- An oxidizing agent is a substance that can accept electrons and be reduced in a chemical reaction. For a species to act as an oxidizing agent, it must be able to undergo reduction to a lower oxidation state.

3. **Analyzing `Br^(-)`**:
- The bromide ion (`Br^(-)`) is in the -1 oxidation state. It cannot be reduced further because there is no oxidation state lower than -1. Therefore, `Br^(-)` cannot act as an oxidizing agent.

4. **Analyzing `H^(-)`**:
- The hydride ion (`H^(-)`) is also in a low oxidation state (-1). Similar to bromide, it cannot be reduced further. Thus, `H^(-)` cannot act as an oxidizing agent.

5. **Analyzing `O_(2)^(2-)` and `NO_(3)^(-)`**:
- The peroxide ion (`O_(2)^(2-)`) can act as an oxidizing agent because it can be reduced to `O^(2-)` or `O^(0)`.
- The nitrate ion (`NO_(3)^(-)`) can also act as an oxidizing agent as it can be reduced to `NO^(2-)` or other lower oxidation states.

6. **Conclusion on Assertion**:
- The assertion is correct because `Br^(-)` and `H^(-)` cannot act as oxidizing agents.

7. **Understanding the Reason**:
- The reason states that `Br^(-)` and `H^(-)` cannot be reduced. This is true as both ions are already in their lowest oxidation states and cannot be reduced further.

8. **Conclusion on Reason**:
- The reason is also correct because it accurately explains why `Br^(-)` and `H^(-)` cannot act as oxidizing agents.

9. **Final Conclusion**:
- Both the assertion and the reason are correct. Therefore, the correct answer is that both the assertion and reason are valid.