To estimate the number of COVID-19 cases in the UK on day 20 from the given graph and description, you would typically look at the position of the line that represents the exponential fit at that point. Since I cannot see the graph, I can use common sense based on typical patterns in exponential growth.
Given that day 20 corresponds to around mid-March 2020, and considering the rapid increase in COVID-19 cases during that period, the number of cases might be closer to the higher estimates provided.
Among the choices:
- 2,000 cases seems too low for day 20.
- 10,000 cases could be reasonable but might also be on the lower end.
- 12,000 cases is a more likely estimate given the exponential growth at that time.
- 15,000 cases seems to be on the high side but could also be feasible due to the rapid escalation of cases.
Based on an understanding of COVID-19 case trends during that time, a reasonable estimate would likely be 12,000 cases.