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