sentence2_structure: A fewer predators<>is<>most likely to cause the number of rabbits$$$A fewer predators<>to cause<>the number of rabbits$$$rabbits<>living<>in an area<>to increase$$$the number of rabbits<>to increase<>
sentence1: A predator of rodents,     rabbits, birds and the like, this is a sizeable snake.
sentence2: A fewer predators is most likely to cause the number of rabbits living in an area to increase.
question: Which factor is most likely to cause the number of rabbits living in an area to increase?