5

Set 1: Boundaries (Advanced)

Explanation

Answer: D

PASSAGE

The senator's proposal to reform the healthcare _______ opposition from both sides of the aisle, was ultimately withdrawn.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. system; which faced
B. system that faced
C. system which faced
D. system, which faced✓ Correct

Detailed Answer Explanation

This question tests your understanding of sentence boundaries and punctuation. 'Which faced opposition from both sides of the aisle' is nonessential (extra info about the proposal). Use comma before '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:

• "nonessential clause"

• "comma + which"

Why others are wrong: A (Semicolon before 'which' is incorrect.), B ('That' is for essential clauses and shouldn't be followed by the closing comma already present.), C (Missing comma for nonessential clause.).