Answer:
The correct answer would be predation
Limited factors refer to the variables which limit the size of a population in an ecosystem.
For example, the availability of food, water, sunlight, shelter et cetera.
If adequate resources are available to the population then predation limits the growth of the population.
Predation is one of the biological interactions in which predator kills and eat the prey.
So, the population size of the mouse would be limited by their predation if adequate resources are available.