Explanation:

• The Disaster Management Act was passed with the primary objective of preparedness, prevention and early planning towards disaster.

It puts into place a systematic structure of institutions at the national, state and district levels. Four important entities have been placed at the national level

• The National Disaster Management Authority (NDMA) tasked with laying down disaster management policies and ensuring timely and effective response mechanism.
• The National Executive Committee (NEC) comprised of secretary level officers of the Government of India assigned to assist the NDMA
• The National Institute of Disaster Management (NIDM) is an institute for planning and promoting training and research in the area of disaster management, documentation and development of national level information base relating to disaster management policies.
• National Disaster Response Force (NDRF) for the purpose of specialist response to a threatening disaster situation or disaster.

Hence option 4th is correct.