Set 10: Boundaries
Explanation
PASSAGE
The teacher _______ explains difficult concepts clearly is popular with students.
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. 'Who explains difficult concepts clearly' is an essential clause (it tells us WHICH teacher). Essential clauses are NOT set off by commas. 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:
• "essential clause"
• "identifies which teacher"
Why others are wrong: A (Colon is grammatically incorrect here.), D (Comma makes the clause nonessential, changing the meaning.), C (Semicolon creates a fragment.).
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