What procedure must contractors performing work on the jobsite have in place?

The correct response emphasizes the importance of a comprehensive risk assessment as a critical procedure that contractors must implement when working on a jobsite. A risk assessment involves identifying potential hazards that could cause harm to workers and assessing the risk levels associated with these hazards. This process not only helps in understanding the types of risks present on the site but also allows contractors to develop strategies to mitigate those risks.

By conducting a thorough risk assessment, contractors can ensure that they comply with safety regulations, protect workers' health, and minimize the likelihood of accidents. It allows for the creation of a safer work environment by identifying necessary safety measures and implementing appropriate control measures to manage the risks effectively.

Other procedures, while important for jobsite safety, do not encompass the same foundational aspect as risk assessment. For instance, risk prevention refers to the actions taken to avoid risks but comes after the risks have been identified; a safety evaluation assesses existing safety protocols but does not focus on new risks; and jobsite analysis examines the site conditions but lacks the detail of specific hazard identification that risk assessment entails.