Answer: D.a simulation.
Explanation:
A random number generator is used to model the patterns of animals in the wild. This type of study is called a simulation.
Simulation is a way to model random events, such that simulated outcomes closely match real-world outcomes. The way of simulating something first needs that a model be advanced, the model shows the key characteristics and functions of the opted process. By observing simulated outcomes, researchers gain insight on the real world.