ESF is supported by which of the following?

The correct answer highlights that ESF, or Emergency Support Functions, is supported primarily by a designated state agency along with additional state agencies. This structure emphasizes the collaborative approach taken during emergency management.

Each ESF has a primary agency responsible for managing that specific function, and various other agencies may assist based on their expertise and resources. This multi-agency support system ensures that a comprehensive and coordinated response can be activated, leveraging the capabilities of different entities to address emergent situations effectively. By pooling resources and expertise from various state agencies, a more robust and efficient emergency response is achieved.

The other options do not encompass the organized support structure required for ESFs. While local volunteers, agencies, and private sector organizations may contribute to emergency efforts, the primary structure relies on state agencies to ensure a coordinated and official response to emergencies.