Answer:
The correct answer is "F" false.
Explanation:
"London-type fog" or "London smog" is a type of contamination that results from having high concentration of sulfur oxides in the air. This air quality issue received its name from "The Great Smog of London" event of 1952 that affected the city and resulted lethal for many people. It is false to affirm that London-type fog is brownish and develops on warm cities. Actually, this type of smog is gray and is caused by a combination of cold weather and windless conditions that trapped all the polutants of the city.
