Population growth The figure shows the growth of a population as a function of time.
(a) If P represents the population and t represents the time, write a mathematical symbol that represents the rate of change (growth rate) of the population with respect to time.
(b) Which of A, B, and C corresponds to the point at which the growth rate attains its maximum?
(c) Which of A, B, and C corresponds to the upper limit of population?