Answer:
D. Because of his upbringing, he did not act how white southerners expected blacks to act, so his murderers singled him out as a sign of unwanted racial progress.
Explanation:
The statement that best describes how the background on Emmett Till life helps us understand the impact of his murder was that he grew up in Chicago and because of his upbringing and low racial prejudice in Chicago, he did not act how white southerners expected him to act and as a result, he acted like he was in Chicago and he got murdered.