Concept:The ability to taste PTC is a genetic trait passed from parents to offspring.Explanation:PTC tasting is controlled by a dominant allele. Individuals with at least one copy of this allele perceive a bitter taste. Non-tasters inherit two recessive alleles and cannot taste PTC. This trait is transmitted through genes, so it is not acquired during a person’s lifetime. It is not sex-linked because the gene is usually located on an autosome. It is not morphological since it involves a sensory response rather than physical structure. Therefore, the character is best described as heritable.Answer:B. heritable