Understanding the Assertion and Reason:
- The permit-license raj imposed excessive regulations on private firms, reducing their competitiveness.
- Due to bureaucratic delays and red tape, businesses focused more on securing permits rather than improving efficiency and innovation.
Evaluating the Explanation:
- The reason correctly explains why private firms could not compete effectively—excessive government control led to resource misallocation.
Conclusion:
Since both the assertion and reason are true, and the reason explains the assertion correctly, the correct answer is \( \mathbf{(A)} \).