Answer:
B. the most limited resources required for survival
Step-by-step explanation:
The maximum number of organism that an environment can support is determined by the amount of resources present in the that environment.
Competition for key resources such as food, light and space ensures that only the strong survives in the environment due to natural selection and such, the population is kept around the carrying capacity of the environment.
A is incorrect, the average daily temperature is not a limited resources.
C is incorrect. While the number of predator can affect the population size, they do not work to limit the population size around the environment's carrying capacity.
D is incorrect. Disease is a limiting factor in the population but does not act to limit the population size around the carrying capacity.
The correct option is B.