Water can gain contaminants as it rolls downhill. Some of these include.

Water contamination is polluting the water with foreign particles such metals and other debris.

Explanation:

Water contamination is water pollution. Water is said to be contaminated some foreign particles or other substances such as metal particles, chemicals, or plastics or dust, stones , pebbles etc. goes into the water or mixes with the water.

Water contamination is harmful to health if water is contaminated with metals such arsenic, sulfur, manganese, iron particles, aluminium, etc. It may prove fatal and cause many other diseases. Drinking contaminated water or using contaminated water causes many diseases including skin diseases.

Water when they roll down the hills carry ways with them decayed leaves and trees, stones, dusts, mica, pebbles, and many more items. This contaminated the water.

the correct answer is d. advanced technology has created a much more interconnected globe. hope this