Concept:Suspended impurities are solid particles that are not dissolved in water.
They are best removed by physically trapping them using a porous material.
Explanation:Filtration is the common method used for this purpose.
Water is passed through a filter medium such as sand, gravel, or filter paper.
The solid particles like dirt, sand, and silt are trapped on the filter.
Clean water then passes through and is collected below.
Fluoridation involves adding fluoride to prevent tooth decay, not removing particles.
Chlorination kills germs and disinfects water, but it does not remove suspended solids.
Distillation removes dissolved salts by evaporation and condensation, but it is not normally used just for suspended impurities.
Therefore, the most appropriate method is filtration.
Answer:C. Filtration