Correct Answer:
A. Caste, sex, residence
Appointment in the service of Pakistan shall not be discriminated against on the basis of Caste, sex, residence. Article 27 of the Constitution of Pakistan explicitly prohibits discrimination in appointments to the service of Pakistan on grounds only of race, religion, caste, sex, residence, or place of birth. This ensures equal opportunity for all citizens in public employment.
- Age and health are generally legitimate criteria for employment, as they relate to a candidate's physical and mental capacity to perform job duties.
- Job experience is a valid and common requirement for many positions, indicating a candidate's proven ability.
- Education is also a standard and necessary qualification for most jobs, ensuring candidates possess the required knowledge and skills.