1. Which sentence best describes the central idea of the article? O A People's personalities and brains are easier and more likely to change
at a young age.
B People's personalities and brains stop changing after they reach a
certain point in adulthood.
O c People's personalities can naturally change over time, while people's
brains change through effort.
OD People's personalities are unlikely to change over time, while people's
brains change naturally over time.