Ellyse Has Been Blind Since Birth

Ellyse has been blind since birth. She was born without an optic nerve. Based on what you know about circadian rhythm and sleep cycles, which of the following is likely true about Ellyse.

A) Her circadian rhythm is likely to be typical to that of most individuals with intact optic nerves.
B) She should show no differences in circadian rhythm, but may have difficulty with sleep.
C) She will have distinct disruptions in circadian rhythm and sleep cycles.
D) There is not enough information to determine the effects on Ellyse's circadian rhythm or sleep.

Correct Answer:

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