Final answer:
Releasing CFC/HCFC/HFC refrigerants is prohibited due to international agreements like the Montreal Protocol designed to protect the ozone layer.
Step-by-step explanation:
Releasing any CFC/HCFC/HFC refrigerant to the atmosphere is prohibited. This is due to their harmful effects on the ozone layer, as defined under the Montreal Protocol agreement (1987) that aimed to phase out CFC production. These substances, once commonly used in refrigeration and as propellants, contribute to ozone depletion and allow more ultraviolet radiation to reach the Earth, hence their release into the atmosphere is not permitted according to international agreements.