Set 11: Boundaries (Advanced)
Explanation
PASSAGE
The ancient ruins, which archaeologists discovered last _______ remarkable insights into early civilization.
Which choice completes the text so that it conforms to the conventions of Standard English?
Detailed Answer Explanation
This question tests your understanding of sentence boundaries and punctuation. The subject 'ruins' is plural, requiring 'provide.' The comma is needed to close the nonessential clause that begins with 'which.' To determine the correct answer, examine where complete thoughts begin and end. Look for independent clauses that need proper separation. A period, semicolon, or appropriate conjunction can correctly join or separate these ideas. When analyzing sentence boundaries, pay attention to how ideas flow from one sentence to the next. Correct punctuation ensures clarity and prevents confusion for readers. Review the options carefully to identify which choice creates proper sentence structure.
Key Evidence:
• "ruins (plural)"
• "nonessential clause"
Why others are wrong: B ('Provides' is singular; doesn't match plural 'ruins.'), D (Colon is incorrect here; should be comma to close nonessential clause.), C (Missing comma to close nonessential clause AND 'provides' is singular.).
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