Which element is essential for enabling reproducible results in mission simulations?

Which element is essential for enabling reproducible results in mission simulations?

• A. Using random seeds for each run
• B. Running simulations with unique, non-reproducible configurations
• C. Running simulations without version control
• D. Version-controlled configurations and reproducible scenarios.

Answer: (D)

Reproducibility in mission simulations comes from being able to repeat the exact same setup. Version-controlled configurations and reproducible scenarios provide the needed traceability: they lock in the exact software version, parameters, data inputs, and dependencies, and they document the initial conditions and mission timeline so anyone can recreate the same run. This creates a verifiable, auditable record that enables exact replication, comparison, and validation of results. Relying on a random seed helps reduce nondeterminism for a single run but doesn’t guarantee the environment or inputs are identical across runs. Without version control or saved, documented scenarios, you can’t guarantee a future run will match a previous one. Similarly, using unique, non-reproducible configurations breaks repeatability entirely. Therefore, having both version-controlled configurations and reproducible scenarios is the essential approach for truly reproducible mission simulations.