Question

what does the dotted red line on the graph represent? k (carrying capacity) s (logistic growth) c (population limit) j (exponential growth)

Explanation:

In population ecology, the carrying capacity ($K$) is the maximum number of individuals of a species that an environment can sustain indefinitely. The dotted red line in the graph is a horizontal line, which is characteristic of the carrying capacity as it represents the upper limit of population size that the environment can support. Logistic growth ($S$ - shaped curve) approaches but does not exceed $K$. Exponential growth ($J$ - shaped curve) has no such upper - limit line in the context of this graph's representation. "Population limit" (option $C$) is a vague term, while $K$ (carrying capacity) is a well - defined ecological concept for the maximum sustainable population size shown by the horizontal dotted line.

Answer:

A. K (carrying capacity)