When does the growth rate of a population following the logistic model equal zero? The logistic model is given as

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When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt = rN(1&minus;N/K)

(a) when N/K equals zero

(b) when death rate is greater than birth rate

(c) when N/K is exactly one

(d) when N nears the carrying capacity of the habitat.