Question

what factors led to the quick spread of disease in tenements?
a. overcrowding
b. lack of sanitation
c. lack of fresh air and light
d. all of the above

Explanation:

• Overcrowding (A) means more people in a small space, increasing contact and disease spread.
• Lack of sanitation (B) leads to poor hygiene and more germs.
• Lack of fresh air and light (C) can weaken immunity and create a bad environment for health.

All these factors contribute to the quick spread of disease in tenements.

Answer:

D. all of the above