​The graph below shows the change in the size of four populations (A-D) over time.​

​Which among the four populations (A, B, C, and D) would have the lowest intrinsic rate of population growth (r)?​

Correct option is D

Explanation-

Intrinsic rate of increase (r) represents the rate at which a population increases in size under ideal conditions (i.e., maximum reproductive capacity). A higher slope on the population vs. time graph indicates a higher intrinsic growth rate. A declining population indicates a negative r, meaning more deaths than births.
Understanding  the graph:
Population A (Curve A) : Steep upward curve → highest growth rate (r is high)
Population B (Curve B) : Moderate upward curve → moderate r
Population C (Curve C) : Flat line → no growth → r = 0
Population D (Curve D) : Declining curve → decreasing population → r is negative (lowest)

Correct Answer:  Option d - D
Population D shows a decline in population size over time, indicating the lowest intrinsic rate of growth (r)—likely a negative value. Hence, it has the lowest growth rate among the four.