Please help me
please no links cause I can't access them
​

Chen's research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?

Which of the fallowing sports became spectator sport at the turn of the century ? a)basketball and boxing b)soccer and football c)racquetball and badminton d)polo and swimming

Ascientist who studies prehistoric and historic people by analyzing artifacts is a(n) a. historian b. botanist c. archaeologist d. anthropologist