The answer is: Population growth will be limited due to increase in competition for food.
Competition is an interaction between organisms. If resources, such as food, water, sunlight, territory, are limited and several species depend on these resources, then, they must compete with other species to gain the resources. With reduced bamboo forests, the competition for bamboo will increase, and also, pandas will be more prone to predators and diseases. This will lead to the limited population growth.
The other two statement are not true because, when survival is threatened, the reproduction will be put aside. Also, the adaptive qualities of panda species are not good since the are endangered.
