One legacy of Madison Avenue's recent campaign to appeal to people fifty years old and over is the realization that as a person ages, their concerns change as well.
One legacy of Madison Avenue’s recent campaign to appeal to people fifty years old and over is the realization that as a person ages, their concerns change as well. (A) the realization that as a person ages, their (B) the realization that as people age, their (C) to realize that when a person ages, his or her (D) to realize that when people age, their (E) realizing that as people age, their why not d? what's the difference between D and B? tks!