Which statement reflects the Theory of Multiple Causality?

• A. Environment is irrelevant
• B. Germs are the sole cause of disease
• C. A single cause leads to disease
• D. A series of adverse exposures can cause adverse health effects

Answer: (D)

Health outcomes usually come from many factors interacting over time, not a single trigger. The idea behind the Theory of Multiple Causality is that disease results from a combination of influences—environmental exposures, behaviors, genetics, pathogens, and social conditions—that accumulate or interact to produce adverse health effects.

The best statement captures this by recognizing that a series of adverse exposures can lead to health problems. It reflects how risks pile up and interact to increase disease likelihood, rather than pointing to one sole cause.

Other options misrepresent the concept: insisting the environment is irrelevant ignores real exposure processes; claiming germs are the sole cause overlooks host factors and nonpathogenic influences; saying a single cause leads to disease contradicts the idea of multiple contributing factors.