Which one of the following is nuclear- capable submarine-launched ballistic missile?

Sagarika (also known as K-15) is India's first indigenous nuclear-capable submarine-launched ballistic missile (SLBM) [1]. Developed by the DRDO, it has a range of approximately 700 km and is designed to be launched from the Arihant-class nuclear-powered submarines. It forms a critical component of India's nuclear triad, providing a sea-based second-strike capability [1]. In contrast, Shourya is a land-based hypersonic surface-to-surface missile derived from the Sagarika technology. Prithvi is a family of tactical surface-to-surface short-range ballistic missiles (SRBM) primarily launched from land platforms [2]. Nag is an indigenous third-generation 'fire-and-forget' anti-tank guided missile (ATGM) designed to destroy enemy tanks [3]. Therefore, only Sagarika fits the description of a nuclear-capable SLBM.

Sources

1. [1] https://www.ipcs.org/comm_select.php?articleNo=2512
2. [2] Rajiv Ahir. A Brief History of Modern India (2019 ed.). SPECTRUM. > Chapter 39: After Nehru... > Panchayati Raj and Nagarpalika Acts > p. 745
3. [3] https://en.wikipedia.org/wiki/Guided_missiles_of_India