10

Set 3: Form, Structure & Sense

Explanation

Answer: C

PASSAGE

Recent studies show that the human heart beats approximately 100,000 times per _______ pumping blood throughout the body without rest.

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

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

Detailed Answer Explanation

[Variation 1] This question tests your understanding of sentence function and text organization. A comma is needed before the participial phrase 'pumping blood.' This phrase adds information about how the heart functions. 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:

• "100,000 times per _______"

• "pumping blood throughout the body"

Why others are wrong: A (A semicolon separates independent clauses; 'pumping blood...' is a phrase.), B (A colon introduces lists or explanations, not participial phrases.), D (Without punctuation, the sentence runs together incorrectly.).

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