Final answer:
Hazards of compressed gases include being corrosive, flammable, and suffocating, thus 'All of the above' is the correct choice.
Step-by-step explanation:
Some hazards of compressed gases include being corrosive, flammable, and suffocating. This means that d) All of the above is the correct answer. Corrosive gases can damage materials and tissues upon contact. Flammable gases can ignite and explode if exposed to an ignition source. For example, acetylene and propane used in welding and barbeque grills are highly flammable. Suffocating gases can displace oxygen in the air, leading to asphyxiation. Moreover, if a fire breaks out, the pressure in the tanks containing the compressed gases can rise, increasing the risk of an explosion, as gases expand upon heating.