The two main WHMIS 2015 hazard groups are:A. Physical and explosiveB. Physical and toxicC. Environmental and healthD. Physical and health

The two main WHMIS 2015 hazard groups are: D. Physical and health.

Here's a step-by-step explanation:

1. WHMIS stands for Workplace Hazardous Materials Information System. It's a Canadian system designed to provide information about hazardous materials used in the workplace.

2. WHMIS 2015 is the updated version of this system, which aligns with the Globally Harmonized System of Classification and Labelling of Chemicals (GHS).

3. The system categorizes hazards into two main groups: physical hazards and health hazards.

4. Physical hazards are classified based on the physical or chemical properties of the product, such as flammability, reactivity, or corrosive to metals.

5. Health hazards are classified based on the ability of the product to cause a health effect, such as toxicity, skin corrosion/irritation, or serious eye damage/eye irritation.

So, the correct answer is D. Physical and health.