Answer:
a. Simulation
Explanation:
In fantasy football, the real performance statistics of actual players are used to generate "mock" scores for imaginary teams in virtual games through the use of simulation data sources.
A simulation data source refers to a collection of data that is generated or produced through the process of simulation. Simulation involves the imitation of real-world processes, systems, or scenarios using computer models, mathematical algorithms, or other techniques to replicate the behavior of the original system. The data collected from these simulations represents the outcomes, behaviors, or states of the simulated entities or events.
In the context of fantasy football, simulation data sources are used to generate mock scores and outcomes for the imaginary teams in the virtual fantasy football games. These simulated scores are based on the statistical performance of real players, but they are not actual game results; rather, they are calculated and used exclusively for the purposes of the fantasy football game.
Thus, the kind of data source used in fantasy football is "simulation."