Here are the appropriate responses to fill in the statements regarding Scenario 3:
In the brown environment, the white rabbits had higher visibility while the brown rabbits had lower visibility. The brown rabbits were able to camouflage and hide more easily from the wolves.
The selective pressure came from the addition of the wolves.
The brown rabbits were more likely to survive and pass on their fur color trait to the next generation. This is why the brown fur color became the most common trait in the population.