**Core Concept**
The question requires knowledge of the case-based online TB notification system developed by the Central TB Division. This system is part of the efforts to control and prevent tuberculosis in India.

**Why the Correct Answer is Right**
Nikshay is an online TB notification system developed by the Central TB Division, Ministry of Health and Family Welfare, Government of India. It aims to improve reporting, monitoring, and management of TB cases in the country. The system enables healthcare providers to report TB cases online, which helps in early detection and treatment of the disease. Nikshay also facilitates tracking of TB patients and their treatment outcomes, enabling healthcare authorities to monitor the effectiveness of TB control programs.

**Why Each Wrong Option is Incorrect**
**Option A:** Nischinth is not a recognized online TB notification system in India.
**Option C:** Laksha is not associated with TB surveillance or reporting in India.
**Option D:** Yaksma is an ancient term for a skin disease and is not related to the online TB notification system.

**Clinical Pearl / High-Yield Fact**
It is essential for healthcare providers to report TB cases promptly and accurately using online systems like Nikshay to ensure timely treatment and control of the disease.

✓ Correct Answer: B. Nikshay