The primary action in hand washing that prevents the distribution or transmission of microor-ganisms is:
a. the amount of soap used.
b. the temperature of the water.
c. the mechanical action of rubbing.
d. the chemical activities in the soap.
C
Most antibacterial soaps are simply bacteriostatic and slow down the growth of organisms. The temperature of the water has no effect on microbial growth because it much be cool enough to apply to the skin without burning. The actual mechanical rubbing is the primary means for re-moval of potentially contaminating microorganisms independent of the chemical nature of the soap.
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