<span>This is latent learning. With this concept, there is often no overt expression of understanding of a task. In addition, reinforcement of the behavior will cause the learned behavior to be exhibited just as quickly as if the reinforcement took place at every trial or task.</span>
The correct answer is that the case fatality rate of the Pacific Pox must be high.
A case fatality rate is the ratio of deaths due to a certain disease (throughout the duration of the disease in question). In this scenario, since there are no survivors left, the proportion of deaths among the people who had this disease is obviously rather high.
U could memorize the word and get it in ur head