10

Set 2: Form, Structure & Sense (Advanced)

Explanation

Answer: C

PASSAGE

The algorithm's accuracy, though impressive in controlled laboratory _______ deteriorates significantly when applied to real-world conditions.

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

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

Detailed Answer Explanation

This question tests your understanding of sentence function and text organization. The concessive phrase 'though impressive in controlled laboratory settings' is parenthetical. A comma closes this phrase before the main verb 'deteriorates.' 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:

• "The algorithm's accuracy, though impressive"

• "deteriorates significantly"

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

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