The correct option is C) Tatra. Tatra is a Czech manufacturer of vehicles, particularly heavy-duty trucks, which are often used as platforms for various military systems, including missile launchers. However, Tatra itself is a vehicle manufacturer, not a missile system. Akash is a medium-range mobile surface-to-air missile system developed by India. Trishul was a short-range surface-to-air missile, part of India’s Integrated Guided Missile Development Programme (IGMDP). Astra is an indigenous beyond-visual-range air-to-air missile. All three (Akash, Trishul, Astra) are types of missile systems used for air defence or aerial combat, unlike Tatra which is a vehicle.