A cooperative organization of industrial firms that assist each other during emergencies is called a(n):

A mutual aid association is a collaborative network where member organizations, often from the industrial sector, offer support to each other during emergencies or crises. These associations are structured to facilitate resource sharing, knowledge exchange, and coordinated response efforts, enhancing the collective resilience of the involved firms in the face of unexpected events.

In the context of emergencies, the focus of a mutual aid association is on mutual benefit and assistance, with established protocols for cooperation during incidents. This contrasts with the other options, which may not specifically capture the essence of cooperation among various industrial firms. For instance, an emergency squad typically refers to a group specifically trained to respond to emergencies rather than serving a cooperative function. Similarly, community emergency cooperatives and disaster control squads may lack the formal collaboration and mutual support focus that defines mutual aid associations. Thus, the characterization of mutual aid accurately reflects the cooperative nature of the organization in the scenario presented.