Nita was an exceptional dancer, and all of her friends loved watching her perform on the dance floor. After a bad fall in which she hit the back of her head, Nita was able to move her legs but she could no longer dance gracefully. She probably damaged her
a. reticular information
b. cerebellum
c. cerebral cortex
d. longitudinal fissure

(I don't think it's b. I think it's either a,c,or d.)