Answer:
D. Mandates that the private-sector entities responsible for critical infrastructure and key resources develop and exercise contingency plans.
Step-by-step explanation:
National Response Framework
It is a guide about how a nation will respond to any disasters and national emergencies .
It mandates that the private - sector is responsible for the critical infrastructure and the main source of development and the exercise contingency plans .
Hence , from the information of the question , the correct answer for the National Response Framework is ( D ) .