The mining of oil shale requires large amounts of water semi-arid conditions hot metal-rich fluids pressurized steam

The mining of oil shale requires LARGE AMOUNT OF WATER.
The processing of oil shale require large amount of water which is needed for the processing activities of oil shale. This is a big challenge to the mining of oil shale because most of oil shale deposits are found in semi arid regions where water is scarce.

The answer is c) organisms that are sensitive to changes in temperature would die.