Answer: D. Water contamination
The water contamination can be considered as the relevant environmental cost as water is the main abiotic factor utilized by all the living organisms for their growth and metabolism, a water body can be used by a number of aquatic living organisms as a habitat, and water cycle is important for the maintaining the balance in the weather conditions and keeping the regulation of quantity of water in all natural water reservoirs.
Water contamination will deteriorate the quality of water it will make water unfit for the consumption of the living organisms, unsuitable as a habitat and will also disturb the water cycle.