Explanation:

- Option 1, ICRA Ltd.: It is a well-known credit rating agency in India, providing ratings and research services across various sectors.

- Option 2, CRISIL: CRISIL is a global analytical company, providing ratings, research, and risk analysis.

- Option 3, Ind-Ra: This stands for India Ratings and Research, a respected credit rating agency in India.

- Option 4, SMERA: SMERA is a credit rating agency that focuses on small and medium enterprises in India.

- Option 5, SIDBI: Small Industries Development Bank of India (SIDBI) is not a credit rating agency. It is a financial institution supporting small and medium enterprises through various financial services.

Option 5, SIDBI is correct.