A. parasites
B. pathogens
C. pests
D. vectors
Correct Answer: Option B
B. pathogens
Explanation
Pathogens are any disease-producing agent, especially a virus, bacterium, or other microorganisms.
A. parasites
B. pathogens
C. pests
D. vectors
Correct Answer: Option B
B. pathogens
Explanation
Pathogens are any disease-producing agent, especially a virus, bacterium, or other microorganisms.
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