What is an underground mine fire? How do they start? How do they affect the environment and
how can we fix the problem?

A coal-seam fire is a burning of an outcrop or underground coal seam. Most coal-seam fires exhibit smoldering combustion, particularly underground coal-seam fires, because of limited atmospheric oxygen availability. Coal-seam fire instances on Earth date back several million years

answer; ///i believe that the correct answer is (e); check first good