Answer:
Tangible (Physical) and intangible.
Step-by-step explanation:
Hazard may be defined as the substance that can cause ham to the living organisms. The hazardous substance can be present in nature or may be induced by the human as well.
The hazardous substance can be divided into the physical, chemical o biological hazard. The physical hazard might include the X rays or U.V. rays. The chemical hazard includes the aresenate, lead and biological hazards include virus and bacteria.
Thus, the correct answer is option (b).