Final answer:
The seniority system prioritizes employees based on their length of employment for decisions like promotions. Such systems must avoid discrimination, adhering to EEOC guidelines, including the Age Discrimination in Employment Act which prohibits age-based discrimination in employment practices. The correct option is A.
Step-by-step explanation:
The seniority system is generally understood as an established system within a workplace that uses the length of employment as a basis for making various employment-related decisions. This can include decisions on promotions, layoffs, and other job assignments. The intention is to create a fair and predictable system wherein those with longer tenure at the company may receive certain advantages or preferences.
Nonetheless, while seniority may be considered in various workplace decisions, it is crucial to note that any employment system, including those based on seniority, must avoid discrimination on the basis of race, color, religion, sex, sexual orientation, national origin, age, disability, or genetic information. This is to ensure compliance with federal laws enforced by the U.S. Equal Employment Opportunity Commission (EEOC). Such laws include the Age Discrimination in Employment Act of 1967 (ADEA), which makes it illegal to discriminate against individuals based on their age in various aspects of employment.