Answer:
B
Step-by-step explanation:
We can calculate the population size at 20 units of time using a linear growth model where, as here, a population grows at a constant rate. Starting with a population N(0) of 5 and a constant growth rate (m) of 2 individuals per unit of time, we can use the formula N(t) = N(0) + m * t, where N(t) is the population at time t.
Plugging in our values:
N(20) = 5 + 2 * 20 = 5 + 40 = 45
Thus, the population at 20 units of time will be 45 individuals.