Answer:
Option D, A new food source outside its range of tolerance
Step-by-step explanation:
Species gets distributed based on their ability to survive or thrive under a given environmental condition.
Basically, the factors which affect the survival of an species are only responsible for its distribution.
Food source outside the range of tolerance will not affect the survival as species nor will affect its health.
However, other factors such as climate, localized disease and change in food distribution pattern will affect the species distribution.
Hence, option D is correct