Logic Breakdown

Passage Summary: Your eyes register light when certain molecules in your retina change shape. However, these molecules can also change shape just because they get warm, which creates errors in your vision.

Reasoning: Light is detected when rhodopsin molecules change shape, but heat (molecular motion) can also cause these shape changes, and this heat is directly linked to the temperature of the retina.

Analysis: Since this is a Most Strongly Supported question, we must treat the premises as absolute facts and look for an inference that logically follows. The stimulus establishes a chain: higher temperature leads to more molecular motion, which leads to more accidental shape changes in rhodopsin, which leads to more visual errors. Look for an answer that connects these dots, perhaps suggesting that a decrease in retinal temperature would result in fewer visual errors or that different temperatures affect visual precision. We are synthesizing the provided data points rather than evaluating an argument's validity.

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19.

Which one of the following conclusions is most strongly supported by the information above?

Correct Answer
B
B follows the given causal chain. For animals whose body temperature matches their surroundings, hot surroundings raise retinal temperature, increasing molecular motion and error; cold surroundings have the opposite effect.
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