Set 13: Form, Structure & Sense (Intermediate)
Explanation
PASSAGE
Recent studies show that 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?
Detailed Answer Explanation
[Variation 1] 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: D (A colon doesn't fit for closing a concessive phrase.), A (Missing punctuation fails to close the parenthetical phrase.), C (A semicolon is too strong for closing a concessive phrase.).