Set 8: Boundaries
Explanation
PASSAGE
The economics of renewable _______ rapidly evolving as new technologies emerge.
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. 'Economics' when referring to economic factors (not the academic discipline) takes plural. Use 'are.' 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:
• "economics (plural when describing factors)"
Why others are wrong: B (Comma incorrectly separates subject from verb.), A (Comma incorrect AND 'is' is singular.), D ('Is' is singular; 'economics' as factors is plural.).
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