Historical context can tell us important information about:
a. the rising action
b. the fate of the character
c. the story's conclusion
d. the author's point of view

The correct answer is D, 'the author's point of view'. Because depending on the time when an author was writing, he had different points of view. He had one in the classicism, and a completely different one in the modernism. So, the context and the era can tell us a lot of important information about the author's opinions and how he writes the novel/poem, etc.

Allusion and illusion. an allusion is an indirect reference, whereas an illusion is something that is unreal or incorrect. each of the nouns has a related verb form: allude “to refer indirectly to,” and illude (not a very common word), which may mean “to delude or deceive” or “to subject to an illusion.”