Answer: observational study
Step-by-step explanation:
The main purpose of an observational study is to describe a group of individuals or to investigate an association between two variables. We can answer questions about a population with an observational study. Hope it helps you if not sorry
Answer:
literacy rate
reasearchers know hot to read and write
4p +2
(2p + 1)(2)
Distribute
2p * 2 + 1*2
noo why ;c *cries in deep suffer and pain*
