What is the most reliable source of dietary fluoride?

Answer;

Public water

Public water is the most reliable source of dietary fluoride.

Explanation;

Fluorine is essential for the normal mineralization of bones and the formation of dental enamel. The biggest percent (about 96%) of the Fluoride in the body is found in bones and teeth. In Teeth, Fluoride becomes incorporated into the crystalline structure of teeth, making them less susceptible to decay.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.