Set 14: Form, Structure & Sense
Explanation
PASSAGE
Recent studies show that the ancient civilization developed advanced irrigation systems, built monumental temples, and _______ extensive trade networks throughout the region.
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. Parallel structure requires matching verb forms: 'developed,' 'built,' and 'established' are all past tense verbs. 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:
• "developed advanced irrigation systems, built monumental temples, and"
Why others are wrong: D ('To establish' is an infinitive; other verbs are past tense.), C ('Establishes' is present tense; other verbs are past tense.), A ('Establishing' breaks parallel structure with 'developed' and 'built.').