Question

why do managers need to understand the workplaces safety policies?
so they can better address concerns and create
effective procedures
so they can more effectively enforce the companys
policies
so they can protect the organization from lawsuits
so they know when workers are malingering

Explanation:

Managers understanding workplace safety policies allows them to proactively address employee safety concerns, develop and refine practical, effective safety procedures, enforce rules knowledgeably, and mitigate legal risks. The most comprehensive and foundational reason is that it enables them to address concerns and build strong safety frameworks, which in turn supports effective enforcement and risk reduction.

Answer:

So they can better address concerns and create effective procedures