Answer to Question 1
A
Slippery floors cause or potentiate accidents, injuries, strain, or discomfort.
Answer to Question 2
D
Biological agents are living organisms whose excretions or parts are capable of causing human disease, usually by an infectious process. Biological hazards are common in workplaces such as health care facilities and clinical laboratories where employees are potentially exposed to a variety of infectious agents, including viruses, fungi, and bacteria.