The answer is: d. All of the above are true.
Mining usually provide many job opportunities in surrounding town, and would be considered by local people as an integral part of their economy. The leakage of substances from the mines often absorbed to the land and water reserves which basically make them no longer eligible for consumption.
To create mines, companies often cut downs trees in order to provide spaces for their equipment, distribution path, or residence. This could disrupts the local populations of flora and fauna.
