I would say <span>b. The band played songs for the crowd with guitars. it sounds very awkward because "with guitars" should be placed after " the band played songs" and a comma placed after "the band played songs".
so this is what it should look like
The band played songs, with guitars, for the crowd
Hope it helps!
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The correct sentence is the second one "She built a high-performance CPU".
The first sentence should not contain a comma and is incorrect. The third sentence is incorrect because there shouldn't be a dash before CPU. The fourth sentence is incorrect because CPU is not written with dashes.
Shakespeare perhaps could’ve said “The true question is “To be, or not to be?”