Which of the following is NOT classified as a work-environment factor? A. temperature and humidity B. illumination C. feedback D. noise and vibration

Feedback

Explanation:

various occupational risk factors and workplace hazards associated with working or living in a particular job environment according to ergonomics studies includes temperature and humidity, notice and vibration, illumination, lightning, noice

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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