I think its D .........................
The primary visual cortex is what sends information to the secondary visuals, which are important for color, motion, and depth perception. If the primary visual is damaged, then it can cause problems for the secondary visuals, which are important for the three reasons listed ^.
Every cell in your body has the same genes/DNA but, the gene expression process decides which genes are active in which cells which is how each cell type gets it properties.
I believe I did this one before and I believe I put A and got it right
