Answer:
The 3rd Option
Explanation:
Simple for this question, C: an investigation because it uses only observations.
Washing your hand before every procedure; C
Answer:
Good hygiene lowers your risk for diseases and illnesses commonly spread through viruses and bacteria. Your hands come into contact with bacteria every time you cough, use the restroom, touch your pet, or touch surfaces, such as stair railings, used frequently by others
Explanation:
The use of hot water and soap does not belong to this protocols.