Read the Following Scenario, and Answer the Questions Below

Read the following scenario, and answer the questions below.

In North America, a toxic weed called leafy spurge was accidentally introduced and has grown and spread rapidly, covering millions of acres in north- central United States and south- central Canada. Leafy spurge is generally avoided by cattle and horses and may be toxic to them. Thus, rangeland where leafy spurge has spread has been damaged by the invasion of this plant.

-Some flea beetles escape from a ship and fly to a small island covered with grass but with no trees or beetle predators.As the beetles feed,they destroy all the grasses.But with abundant food,the beetle population soars,doubling in size every month.After about a year,the population crashes as thousands of beetles have destroyed almost all of the plants,and there is little left to feed the large population.This scenario best illustrates ________.

A) the fact that the beetles have strong competition from other species for food supply
B) constant growth followed by equilibrium
C) a population that has stabilized near its carrying capacity
D) exponential growth followed by a population crash