Multiple Choice
Why are infectious agents more easily spread more among people who live in a city such as the one pictured below? 
A) Air pollution contributes to the spread of infectious agents.
B) Extremely crowded conditions make the transmission of infectious agents easier.
C) Industrial pollutants like POPs increase the risk of spreading infectious diseases.
D) Road construction allows infectious agents to move into cities.
Correct Answer:
Verified
Correct Answer:
Verified
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