I believe the answer is C because if you looking for dog pictures and end up looking at cat pictures you went off topic, since you went to look at dog pictures. Its the same when you go looking for research on a topic.
Answer: It is usually clearer for readers to follow.
Hansberry names the play after a line in the poem "Harlem" (sometimes called "Dream Deferred"), by the great Harlem Rennaisance poet Langston Hughes. In the poem, Hughes asks: "What happens to a dream deferred?/ Does it dry up/ like a raisin in the sun?"
The introduction should introduce your main character, setting, location and time. it should also either introduce the main complication, start heading for the main complication or foreshadow the main complication.
You have to be more specific
