The argument states that the higher the temperature the greater the amount of molecular motion. The more molecular motion, the greater the number of errors in the visual system. Therefore, animals whose body temperature-and by extension the temperature of the retinae-match their surroundings are likely to have more molecular motion. And the more molecular motion, the greater the number of errors in the visual system.
Therefore, the answer that matches this is (B).
@Ramesh, let me know if that was helpful
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