What does phenotype refer to?

Phenotype refers to the observable physical appearance and traits of an organism, resulting from the interaction of its genetic makeup (genotype) with the environment. This includes characteristics such as height, color, shape, and behavior, which can be seen and measured. The phenotype is distinct from genetic information, which pertains to the specific alleles and genes an organism carries. The sequence of DNA bases pertains to the molecular structure of DNA itself, while base pairing relates to how the nitrogenous bases pair in the DNA double helix. Thus, the definition of phenotype being related to physical appearance and traits is what makes this choice the correct one.