At what age can a child hold a crayon adaptively?

To increase healthy years of life, society should focus mainly on improving the health of _____.

A) young people B) middle-aged and old people C) young-old people D) old-old people and women

What does research on sensitivity to alcohol suggest?

a) Different races seem to vary in their sensitivity to alcohol. b) The apparent variation in individual levels of sensitivity to alcohol is psychological. c) The only system in the body that is affected directly by alcohol is the central nervous system. d) Facial flushing, raised body temperature, and rapid pulse are signs of an acquired allergic reaction to alcohol.