Set 14: Form, Structure & Sense (Advanced)
Explanation
PASSAGE
Researchers have discovered that certain genes, when _______ correctly, can enhance a plant's resistance to drought conditions.
Which choice completes the text so that it conforms to the conventions of Standard English?
Detailed Answer Explanation
This question tests your understanding of sentence function and text organization. 'When expressed correctly' is a reduced adverbial clause (from 'when they are expressed'). The past participle 'expressed' correctly forms this construction. 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:
• "certain genes, when _______ correctly"
• "can enhance"
Why others are wrong: C ('When will express' creates an awkward future construction.), D ('When expressing' suggests genes express themselves, but genes are expressed.), A ('When are expressing' is grammatically incomplete.).
🎯 Keep Practicing!
Master all sections for your best SAT score