Which of the following is not an example of ageism?
a. advertisements that use elderly people to sell health related devices
b. an older adult portrayed as a positive role model
c. news coverage focusing only on the negative aspects of aging
d. a television show portraying elderly citizens as cranky and unproductive

An older adult portrayed as a positive role model is not an example of ageism. So the correct option among all the options that are given in the question is option "b". Ageism is actually a social attitude that defines the way people look at older people and stereotypes them as lazy, useless, strong or in any other way. Ageism is also a part of the way where people feel that they can treat any elderly people in demeaning ways.

Not at any time no but if the states  somehow switch parties its likely