Answer:
Age Discrimination in Employment Act
Step-by-step explanation:
Age Discrimination in Employment Act of 1967 or ADEA is an act which protects the rights from age discrimination. This protects the rights of all ages.
It also protects the rights of people who are forty years of age or older than that. For people who are forty and older than forty can not be discriminated based on their ages while an employer hire them, or when terms and conditions of privileges is violated. It also protects their rights from discrimination at the time of promotion.
In the given case, Emma is passed over promotion based on age.
So, the act that can protect her rights is "Age Discrimination in Employment Act".