Set 1: Boundaries
Explanation
PASSAGE
The researchers concluded that the new treatment _______ effective in reducing symptoms by nearly 40 percent.
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 'treatment' is singular, requiring singular 'was.' The past tense matches 'concluded.' 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:
• "treatment (singular)"
• "concluded (past tense context)"
Why others are wrong: A ('Have been' is plural; doesn't match singular 'treatment.'), B ('Were' is plural; doesn't match singular 'treatment.'), C ('Are' is plural and present tense; neither matches.).