The correct answer is: C. 500 m to 9 km
Akash is a medium-range surface-to-air missile (SAM) system developed by the Defence Research and Development Organisation (DRDO) of India. It is designed to intercept and destroy aircraft, cruise missiles, and Unmanned Aerial Vehicles (UAVs) at ranges of 500 m to 9 km and altitudes of 25 m to 30,000 m.
The Akash missile system is a two-stage missile, with a solid-propellant booster stage and a liquid-propellant sustainer stage. The missile is guided by a combination of inertial guidance and radar guidance. It has a maximum speed of Mach 2.8 and a terminal speed of Mach 4.5.
The Akash missile system was inducted into the Indian Air Force (IAF) in 2007 and the Indian Army (IA) in 2012. It has also been exported to Bangladesh and Sri Lanka.
The Akash missile system is a highly capable SAM system that has been successfully deployed by the Indian Armed Forces. It has proved to be a reliable and effective system in the defense of Indian airspace.
The other options are incorrect because they do not represent the actual range of the Akash missile system.