Explanation:

Agni class of missiles are the mainstay of India’s nuclear launch capability, which also includes the Prithvi short-range ballistic missiles, submarine launched ballistic missiles and fighter aircraft.

• Agni and Prithvi are India’s only two nuclear missiles, but beyond those, tactical nuclear weapons can be fired from some Indian Air Force fighter jets or from Army guns, which have a low range, around 50 km.
• Brahmos is one of the fastest cruise missiles currently operationally deployed with speed of Mach 2.8, which is 3 times more than the speed of sound.
• It is a joint venture between the Defence Research and Development Organisation of India (DRDO) and the NPOM of Russia.
• India does not call BrahMos nuclear.
• Rudram-1 is an air-to-surface missile, designed and developed by the DRDO. It is the first indigenous anti-radiation missile of the country.

Hence option 4th is correct.