Question

proper footwear should be ____________ shoes with a slip resistant sole.
closed - toe
comfortable
water - proof
military - grade

Explanation:

In many settings (like workplaces, labs, etc.), closed - toe shoes with slip - resistant soles are considered proper footwear. Closed - toe shoes protect the toes from potential hazards (e.g., falling objects, chemicals in a lab). While comfortable shoes are good, the key safety aspect here is toe protection. Waterproof shoes are not always necessary for "proper" footwear in a general sense (unless in a specific wet environment). Military - grade shoes are often over - specified for general proper footwear needs.

Answer:

Closed - toe