Final answer:
The customer who assumes an elderly salesperson is senile due to their age is engaging in age discrimination, a form of ageism that is based on prejudice.
Step-by-step explanation:
l state based on their age without any evidence to support this belief is a classic example of age discrimination, which is both unfair and illegal in many contexts, including employment.
If a customer thinks an elderly salesperson must be senile, she is engaging in: age discrimination. This is a type of prejudice and discrimination toward individuals based solely on their age, known as ageism. Making assumptions about an individual's abilities or menta