- (A) Visual  receptors,  rods    and cones,  are embedded    in  the retina, which   is  the back    part    of  the eye.
 The rest of the items are incorrect because they describe functions the retina does not perform.
                    
                      marvins-underground-k-12
                      (Marvins-Underground-K-12)
                      
                    
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