Correct option is A
The chronological order of Indian space missions is:
• INSAT-1A (D) – Launched in 1982
• RISAT-1 (A) – Launched in 2012
• Mars Orbital Mission (C) – Launched in 2013
• Chandrayaan-2 (B) – Launched in 2019
Thus, the correct order is: D, A, C, B.