The correct option is (b).
The question addresses the structural orientation of India's healthcare system (curative versus preventive) and the constitutional division of powers regarding health administration between the Centre and the States.
Statement-wise Analysis:
Reasoning for Option (b): While both statements are factually correct, Statement-II is not the correct explanation for Statement-I. The decentralized nature of healthcare (State responsibility) does not inherently necessitate a focus on curative care. In fact, decentralized systems are theoretically better positioned to deliver preventive and primary care at the grassroots level. The bias towards curative care is a result of historical policy choices, funding patterns, and medical education priorities, rather than the constitutional assignment of health to the States.
Key Takeaway: Public health is a State subject under the Constitution. The National Health Policy 2017 seeks to reorient the system from "sick-care" (curative) to "wellness" (preventive and promotive).