Answer : 2. "इसरो"
Explanation :

Indian Space Research Organisation (ISRO) developed a computational fluid dynamics (CFD) software Pravaah at Vikram Sarabhai Space Centre. The Parallel RANS Solver for Aerospace Vehicle Aero-Thermo-Dynamic Analysis (PraVaHa) simulates air flow for launch vehicles, which is important for designing their shape, structure, and thermal protection systems. It will be used in the Gaganyaan program for analyzing human-rated launch vehicles.