Determine whether the given description corresponds to an observational study or an experiment. In a study of 411 children with a particular disease, the subjects were asked to complete a survey about their diet upon arrival to a hospital.
Does the given description correspond to an observational study or an experiment?
s
O A. The given description corresponds to an observational study

OB. The given description corresponds to an experiment.
O C. The given description does not provide enough information to answer this question