NEED HELP ASAP :(

How many years are there between presidential elections?

Which entity owns most if the television stations, radio stations, and newspapers in the united states

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 following best illustrates the process of the supreme court’s review of a case?