Which of the following statements is not true? 1. By age 12, the brain has reached adult size.
2. An infant has few reflexes at birth. They develop later in childhood.
3. Constant stimulation of the nervous system is important for health growth and development of an infant.
4. By age 7, the brain has reached 90% of the adult size

I’m going to guess these are the choices: a) recreational skiing developed in the mid-19th century b) it was originally invented as a way of getting from place to place in snowy regions c) downhill skiing is currently the only common form of the sport d) it mostly evolved from snowshoeing- if that’s the cases then the answer would be c) downhill skiing is currently the only common form of the sport