Question

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.

please select the best answer from the choices provided

a
b
c
d

Explanation:

The London "killer fog" in 1952 was mainly due to a combination of factors. At that time, there were a large number of coal - fired stoves in London. The burning of coal released a large amount of pollutants. Coupled with the stagnant air (inversion layer), these pollutants could not be dispersed and accumulated in the air, forming toxic fumes.

• Option a: The "killer fog" was mainly an air pollution problem, not a water supply contamination problem.
• Option c: Faulty ventilation in houses was not the main cause of the large - scale "killer fog".
• Option d: There was no mention of forest and wildfires in the surrounding areas being the cause of the "killer fog" in London.

Answer:

B. Millions of coal fires and stagnant air caused toxic fumes to build up in the air.