yulieana yulieana
  • 04-04-2020
  • Social Studies
contestada

You want to find out if a new drug can help lower blood pressure.
a.nothing
b.survey
c.experiment
d.observational study​

Respuesta :

lisal77
lisal77 lisal77
  • 04-04-2020
D. Observational study.
Answer Link

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