Final answer:
The subject of this question is Advocacy, which involves taking action to restore oral health, assist clients in achieving optimal oral health, and promote fair access to quality oral health services.
Step-by-step explanation:
The subject of this question is Advocacy. Advocacy involves taking all appropriate action to restore oral health, assist clients in achieving and maintaining optimal oral health, and promote fair and reasonable access to quality oral health services as an integral part of the healthcare system. It also includes advocating for patients' rights and promoting ethical principles in healthcare.