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Which of the following is one of the most effective ways to prevent the transmission of pathogens?
Stratified Societies
Societies organized into hierarchies or classes based on factors such as wealth, ancestry, or occupation, often leading to unequal access to resources and power.
Social Mobility
The movement of individuals, families, or groups through a system of social hierarchy or stratification.
Test-tube Method
A technique often associated with laboratory experiments or procedures conducted in vitro, such as the cultivation of microorganisms or cells in a test-tube.
Reproduction
The biological process by which new individual organisms are produced from their parents.
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