A - Their lenses shrink.
b - Lenses in their eyes become more brittle.
c - They lose photoreceptors.
d - Their pupils respond more slowly to light.
I believe that the answer is going to be C - they lose photoreceptors. I just want to be positive. Please leave respectable and respectful answers that state the option you chose, and why you think that is the correct one.
Thank you for your time.
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