Employers must protect workers from struck-by hazards by
a. ensuring guards on tools and equipment are removed when it is absolutely necessary to get the job doneb. establishing guidelines that allow only contractors access in the crane work zonec. providing ppe such as hard hats and safety glasses

C. Providing PPE such as hard hats and safety glasses.

Explanation:

In workplaces where there is struck-by hazards, employers are required to provide personal protective equipment (PPE) as part of the safety measures that should be in place to avoid these situations or in case that they happen, prevent severe injuries. This equipment includes special clothing, goggles, helmets, gloves, shoes, etc, that depend on the job that needs to be performed.

i think the answer is b.