**Core Concept:** Government-funded healthcare programs that provide medical services to the public at no cost, aiming to improve healthcare access and equity.

**Why the Correct Answer is Right:** **Option C: Public Health Insurance Scheme (PHIS)** refers to the provision of free medical services to the people at government expense in India. The Indian government established the National Health Policy in 1978, emphasizing the importance of universal health coverage and social health insurance. PHIS is a part of this policy that aims to improve healthcare access and equity for the general population, particularly the underprivileged sections.

**Why Each Wrong Option is Incorrect:**

**Option A: National Health Mission (NHM)** focuses on improving healthcare infrastructure and implementing health programs at the state and district levels in India. While NHM plays a significant role in healthcare delivery, it does not specifically address the provision of free medical services to the people.

**Option B: National Rural Health Mission (NRHM)** is another initiative aimed at improving healthcare in rural areas of India but does not encompass the concept of providing free medical services to the people.

**Option D: Ayushman Bharat Yojana** is a flagship program launched by the Indian government to provide health insurance coverage to the citizens. While it aims to reduce financial burden due to healthcare expenses, it does not specifically refer to the provision of free medical services.

**Why the Correct Answer is Right:** PHIS addresses the direct provision of free medical services to the people, thereby ensuring greater healthcare accessibility and equity. It is a crucial component of the National Health Policy, which emphasizes the need for a social health insurance scheme.

**Clinical Pearl:** Understanding government healthcare initiatives is essential for medical professionals as it helps them navigate the complex healthcare landscape in their region and advocate for better healthcare services.