Answer:
The current option is A) Around 2020
Step-by-step explanation:
The graph in the diagram shows that around 2020, there might be an up rise in the population of the world or there might be a catastrophic drop in the population of the earth. The reason for this decline is not mentioned in the graph. Bit it can be seen in the graph that out of the three models of world population growth, one of the models depicts a catastrophic decline in population around 2020.