Final answer:
The geography master is advancing a biased point of view, which is challenged by a new student in the class.
Step-by-step explanation:
The geography master in the story is found advancing a biased point of view. He believes that Africans are suffering from a curse inflicted on them by God and uses examples such as the presence of deadly mosquitoes and snakes, as well as the prevalence of sickle cell disease, to support his theory. However, when a new student challenges his views by pointing out that white men can also suffer from sickle cell disease and that deadly mosquitoes and snakes exist in other parts of the world, the geography master becomes angry and no longer dwells on the issue.