Toward the end of the final paragraph, the author begins a sentence with “Yet it must not be supposed” in order to issue a disclaimer about the validity of his observations

Answer A: issue a disclaimer about the validity of his observations
A

highlight an assumption that he initially made about emigrants

Answer B: highlight an assumption that he initially made about emigrants
B

signal a shift in his perspective on his fellow emigrants

Answer C: signal a shift in his perspective on his fellow emigrants
C

sharpen a contrast between two types of emigrants he observed

Answer D: sharpen a contrast between two types of emigrants he observed
D

warn his audience against the folly of judging others