Answer:
The answer is C.
Step-by-step explanation:
I think the main and most important disadvantage of small patches of land that are seperate from each other would be the option given in C. It would basically force the animals into small areas where there is finite resources and that would lead to territory problems among them where groups start fighting. This action would also remove the possibility of the different species interacting with each other and thus disrupting the food chain which is crucial for a stable habitat.
I hope this answer helps.