Step 1: Understanding the Question:
• The Rural Infrastructure Development Fund (RIDF) was set up to finance rural infrastructure projects of state governments.
Step 2: Detailed Explanation:
• RIDF was created in 1995-96 and is managed by NABARD, the apex bank for agriculture and rural development.
• SIDBI looks after small industries, EXIM Bank looks after foreign trade finance and IFCI is an industrial finance institution, so none of them implements RIDF.
Step 3: Final Answer:
The correct option is (D) NABARD.