Which of the following are considered to be physical hazards?

Physical hazards refer to factors within the environment that can cause harm to individuals through their physical properties. Noise, high pressure, and temperature extremes each represent different types of physical hazards that can pose risks in various settings.

Noise can lead to hearing loss, stress, and reduced communication, making it a significant concern in workplaces where loud machinery or equipment is present.

High pressure, particularly in settings like laboratories or industrial environments, can create risks such as the potential for explosions or equipment failure, posing serious safety threats to workers.

Temperature extremes can lead to a range of health issues, including heat stress or hypothermia, depending on whether individuals are exposed to excessive heat or cold.

Together, these three elements represent a broad spectrum of physical hazards that can endanger health and safety in various occupations, hence making "all of the above" the comprehensive choice that encapsulates the nature of physical hazards effectively.