Final answer:
For high-risk asbestos-exposure jobs, employers must provide preventive protections such as clean rooms, showers, and respirators, but not cancer insurance. (option 1 is the correct answer).
Step-by-step explanation:
The preventive protections that employers must provide for workers involved in high-risk asbestos-exposure jobs include cancer insurance, clean rooms, showers, and respirators. Cancer insurance is a type of insurance coverage that helps individuals pay for cancer treatment and related medical expenses, but it is not a preventive measure against asbestos exposure.
Cancer insurance is not a preventive measure; rather, it is a financial safeguard for potential health issues. While it can offer support in the event of illness, it does not directly prevent asbestos exposure. The other preventive measures focus on minimizing the risk of exposure and ensuring prompt response if exposure occurs, aligning with occupational health and safety standards.
While cancer insurance supports workers' well-being, employers must primarily focus on implementing clean rooms, showers, and respirators as preventive measures in high-risk asbestos-exposure jobs to ensure a safer work environment.