'Feeling blue' means that a person is sad, or depressed.
Sentence 4 because it summarizes the paragraph but does not give an opinion like answer but used factual evidence to support it.
B
You are thinking about what you just learned and are summing it up
This is of course somewhat of a subjective question, but in general most would agree that Beats emulated "<span>D. Ezra Pound" since their tactics were similar. </span>
