Which of the following best describes the purpose of the sentence in lines 10-15?
Show Hint
- To show that economic signaling theory fails to explain a finding
- To introduce a distinction not accounted for by economic signaling theory
- To account for an exception to a generalization suggested by Marquardt and McGann
- To explain why Marquardt and McGann's research was conducted
- To offer an explanation for an observation reported by Marquardt and McGann
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
This question asks for the function or purpose of a specific sentence within the larger argument of the passage. To answer it correctly, one must understand not only what the sentence says but also how it relates to the sentences before and after it. The options present various rhetorical functions: challenging a theory, introducing a new idea, explaining an exception, justifying research, or providing an explanation.
Step 2: Detailed Explanation:
The question directs us to lines 10-15. Based on the options, the surrounding text likely discusses "economic signaling theory" and a specific "finding," possibly from research by "Marquardt and McGann" (mentioned in other options).
Let's analyze the chosen answer, (A):
\[\begin{array}{rl} \bullet & \text{For option (A) to be correct, the passage would first have to introduce the economic signaling theory. This theory likely posits that consumers interpret expensive advertising as a "signal" of a manufacturer's confidence in their product's quality.} \\ \bullet & \text{Then, the passage would present a specific finding (e.g., consumers reacted in a certain way to an advertising campaign).} \\ \bullet & \text{The sentence in lines 10-15 would then explicitly state or strongly imply that this finding is inconsistent with, or cannot be explained by, the principles of economic signaling theory. For example, the sentence might say something like, "This result, however, runs counter to what signaling theory would predict..." or "Signaling theory alone cannot account for this perception..." This shows the theory's limitation or failure in this specific context, making (A) the correct purpose.} \\ \end{array}\]
The other options are less likely given the typical structure of academic arguments. Option (E) suggests the sentence explains an observation, whereas (A) suggests it points out a failure to explain, which is a more critical and specific rhetorical move.
Step 3: Final Answer:
Without the passage, we infer based on the common structure of critical analysis texts. The sentence in lines 10-15 most likely serves to highlight a specific finding that presents a challenge to the established economic signaling theory, thereby setting the stage for an alternative explanation. Therefore, its purpose is to show that the theory fails to explain the finding.
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