Step 1: Understanding the Concept:
A depository is an organization that holds securities (like shares/bonds) in electronic form.
Step 2: Detailed Explanation:
In India, there are two main depositories:
1. NSDL (National Securities Depository Limited) – promoted by the National Stock Exchange (NSE).
2. CDSL (Central Depository Services (India) Limited) – promoted by the Bombay Stock Exchange (BSE).
ISIN is just a unique identification number for a security, not a depository.
Step 3: Final Answer:
(A) National Securities Depository Limited