What are "The Focus Four" top causes of deaths on a construction site?

The correct response identifies "The Focus Four" as the leading causes of fatalities on construction sites: falls, being struck by an object, electrocution, and being caught in-between. Each of these categories represents significant hazards that workers face in the construction industry, and they are prioritized for safety training and regulatory focus to mitigate risks and prevent accidents.

Falls account for a substantial number of fatalities, often happening from heights when proper safety measures like harness systems are not in place. Being struck by an object frequently occurs due to falling tools or materials, highlighting the importance of securing equipment and proper site management. Electrocution is a risk due to the presence of overhead or underground electrical lines, making it essential for workers to be aware of their surroundings and adhere to safety protocols. Lastly, being caught in-between refers to incidents such as a worker being crushed by equipment or materials, emphasizing the need for caution and appropriate safety measures when operating machinery.

The other options mention substances or behaviors that, while they can influence safety in an indirect manner, do not represent the most urgent risk factors in terms of direct physical hazards on construction sites. Understanding and addressing these top causes through training and safety protocols is crucial for reducing the risk of fatalities in the construction industry.