When Kottak and Kozaitis say that in contemporary America, age is not just a demographic variable, what they imply is: When Kottak and Kozaitis say that in contemporary America, age is not just a demographic variable, what they imply is:

a. The gray and the brown are in conflict
b. Age has been used as a basis of organizing for the rights of the elderly population
c. The senior population has been neglected
d. To age ungracefully is unAmerican
e. Aging is a human universal