The correct answer is (a). The Andhra Pradesh Public Service Commission (APPSC) is responsible for the recruitment of eligible candidates to various state government services. It is an independent body that conducts competitive examinations for the recruitment of candidates to various state government services. The APPSC is also responsible for the conduct of departmental examinations for the promotion of government employees.
Option (b) is incorrect because the APPSC is not responsible for policymaking. Policymaking is the responsibility of the state government.
Option (c) is incorrect because the APPSC is not responsible for budget preparation. Budget preparation is the responsibility of the state finance department.
Option (d) is incorrect because the APPSC is not responsible for law enforcement. Law enforcement is the responsibility of the state police department.