4

Set 1: Boundaries (Intermediate)

Explanation

Answer: A

PASSAGE

The artifacts _______ at the excavation site, including pottery fragments and bronze tools, provide valuable insights into ancient civilization.

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

A. discovered✓ Correct
B. , discovered
C. discovered,
D. ; discovered

Detailed Answer Explanation

This question tests your understanding of sentence boundaries and punctuation. 'Discovered at the excavation site' is an essential phrase (specifies which artifacts). The parenthetical 'including pottery...' is already properly set off with 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 modifier (discovered...)"

• "no comma before essential phrase"

Why others are wrong: B (Comma makes 'discovered' nonessential, changing meaning.), C (Comma before 'including' is already in the sentence structure.), D (Semicolon would create a fragment.).