Which statement explains how commercial land use negatively impacts watersheds?
Chemicals in fertilizers run off into water and cause algae blooms.
Production of clothing items makes pollutants that contaminate the water.
Chemicals from lawn maintenance leach into water and are washed into rivers,
Motors from boats and wave runners leak fuel pollutants into water and affect fish.

Option B, Production of clothing items makes pollutants that contaminate the water.

Explanation:

Clothes manufacturing is a commercial activity. Most of the clothes, now days are made up of synthetic fibers and hence are non-degradable under normal scenarios.  

Textile and fabric industries use lot of water for washing and dyeing which ultimately is disposed of as waste water into the nearby water bodies. This leads to water pollution.  

Hence, option B is correct

the answer is c.the valence of the atoms combine .