Which method is used to control hazardous exposures?

B is the appropriate choice because engineering controls are specifically designed to reduce or eliminate hazardous exposures in the workplace. These controls work by modifying the environment or equipment to reduce the risk of exposure to harmful substances or situations. For example, a well-designed ventilation system can effectively dilute or remove contaminants from the air, thereby improving air quality and protecting employee health.

Using engineering controls is a fundamental principle in occupational safety and health because it addresses hazards at their source, ensuring that workers are less likely to come into contact with danger. This method is often preferred over administrative controls or personal protective equipment, as it provides a more permanent and effective solution to reducing exposure.

While increasing employee work hours, performing routine health checks, and offering incentives might play a role in workplace safety and health initiatives, they do not directly reduce the hazardous exposure itself as engineering controls do. Instead, they may address safety compliance or health monitoring, which are important but secondary to the physical changes that engineering controls implement to mitigate risk.