Which of the following best describes what led to London’s “killer fog” in 1952?

a.
Pollution from the air contaminated the water supply which is what killed people.
b.
Millions of coal fires and stagnant air caused toxic fumes to build up in the air.
c.
Poor city design led to faulty ventilation in houses.
d.
Soot from forest and wildfires in the surrounding areas blew over the city.

b. millions of coal fires and stagnant air caused toxic fumes to build up in the air.

Explanation:

I looked up the question on Google and the answer was on there.

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: