The battle tanks that have been modernized to keep pace with the latest technology development is

Arjun
T-55 and T-72
Vijayanta
All of the above

The correct answer is: D. All of the above

Arjun, T-55, and T-72 are all battle tanks that have been modernized to keep pace with the latest technology development.

  • Arjun is a third-generation main battle tank developed by India. It was inducted into the Indian Army in 1994. The Arjun has been upgraded several times, including the Arjun Mk II, which was inducted into service in 2011. The Arjun Mk II features a new 120 mm smoothbore gun, a new fire control system, and a new armor package.
  • T-55 is a second-generation main battle tank developed by the Soviet Union. It was first produced in 1955 and was widely exported to the Soviet Union’s allies. The T-55 has been upgraded several times, including the T-55AM2, which was introduced in 2005. The T-55AM2 features a new 125 mm smoothbore gun, a new fire control system, and a new armor package.
  • T-72 is a third-generation main battle tank developed by the Soviet Union. It was first produced in 1971 and was widely exported to the Soviet Union’s allies. The T-72 has been upgraded several times, including the T-72M1M, which was introduced in 2001. The T-72M1M features a new 125 mm smoothbore gun, a new fire control system, and a new armor package.

All of these tanks have been upgraded to include the latest technology, such as new guns, fire control systems, and armor packages. This has allowed them to remain competitive on the battlefield.