German Researchers Conducted a Study Investigating What Happens to the Brain

German researchers conducted a study investigating what happens to the brain when we learn a new, challenging skill.Participants learned to juggle and then had brain scans taken using MRI. What changes did the MRI scans reveal?

A) a 3 to 4 percent increase in gray matter in two brain regions involved in perceiving, remembering, and anticipating complex motions
B) a 3 to 4 percent increase in white matter in a brain region involved in kinesthetic sense
C) a 3 to 4 percent decrease in white matter in two brain regions involved in perceiving, remembering, and anticipating complex motions
D) There were no brain changes identifiable in the scans.