Question

select the word that means a fixed idea about a group that may be unfair or untrue.
american runner anne garrett didnt take up running until age seventy - two. at eighty,
she set a national record for the half - marathon in her age group. she defies the
stereotype that older people dont exercise, although she urges kids to run, too.

Explanation:

The text describes Anne Garrett defying a 'fixed idea' (older people don't exercise). The word'stereotype' means a fixed, often unfair or untrue idea about a group.

Answer:

Stereotype