Which type of hazard can result in illness or injury?

Health hazards are those that can lead to illness or injury, affecting a person's well-being. These can range from biological agents like bacteria and viruses that cause diseases to ergonomic issues that result in musculoskeletal disorders. Health hazards may not always have immediate effects but can lead to long-term health issues if not addressed.

Physical hazards, while they can cause injury, are typically associated with environmental factors like slips, trips, and falls. Chemical hazards relate specifically to harmful substances that may cause injury or illness upon contact or inhalation, while environmental hazards encompass a broader range of external factors impacting health but do not specifically refer to conditions leading to sickness in the same direct way as health hazards do. Thus, the focus of health hazards on illness and injury makes this the correct answer.