John has been recruited as a firefighter for his city's fire department. he notices that the fire department does not provide the fireman with adequate equipment for protection against hazardous substances. in this context, the fire department is violating the .

In the given context, the fire department is violating the Occupational Safety and Health Act, 1970

Explanation:

This Act is a US employment law covering the private industry and the United States federal labour rule on industrial health and safety. It was promulgated in 1970 by Congress and approved on 29 December 1970 by Richard Nixon's Presidency .

The main objective is to provide workers with an atmosphere that does not include known risks such as toxic substance concentrations, noise pollution, technical dangers, hot or cold or unsafe environments.  

The relevant OSHA requirements must be dealt with by employers. They must also comply with the OSH Act General Responsibility Clause allowing employers to rid themselves of known serious risks.

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answer(d) all of the choices are correct;