Answer:
B. the most limited resources required for survival
Step-by-step explanation:
The population and survival of organisms in any ecosystem is usually dependent on the availability of a number of resources, which may include water, food, space, sunlight, and other environmental conditions.
However, what determines the maximum number of organisms that an ecosystem can adequately cater for or sustain is the most limited resources required for the survival of that organism in that ecosystem. The carrying capacity of an ecosystem is dependent on the most limited resources required for sustenance of that organism