6

Set 1: Form, Structure & Sense (Advanced)

Explanation

Answer: D

PASSAGE

The research suggests that early intervention programs, when properly _______ can significantly improve developmental outcomes for children at risk.

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

A. implemented:
B. implemented;
C. implemented
D. implemented,✓ Correct

Detailed Answer Explanation

This question tests your understanding of sentence function and text organization. The phrase 'when properly implemented' is a reduced adverbial clause that is parenthetical. A comma closes this phrase before the main verb 'can significantly improve.' Each sentence in a well-constructed text serves a specific purpose. Consider what role this sentence plays in the argument: does it introduce, support, contrast, or conclude an idea? Understanding why an author includes specific sentences helps you grasp the overall argument. Each sentence should serve a clear purpose: introducing ideas, providing evidence, acknowledging counterarguments, or drawing conclusions. Identify the role to understand the structure.

Key Evidence:

• "intervention programs, when properly"

• "can significantly improve"

Why others are wrong: A (A colon doesn't fit for closing an adverbial clause.), B (A semicolon is too strong for closing an adverbial clause.), C (Missing punctuation fails to close the parenthetical phrase.).