7. today many iroquois live on

Agerman mapmaker named a continent after me

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?

Me and i you plus a 5 stars and brainlist