A Community/public Health Nurse Needs to Conduct a Descriptive Study

A community/public health nurse needs to conduct a descriptive study of the health needs of elderly persons attending a congregate meal at the local community center.Therefore,the nurse would

A) Divide the elderly population into two groups (healthy and unhealthy) ,teach courses on healthy lifestyles,and then measure any changes.
B) Use two randomly chosen groups,teach healthy lifestyles to all participants,and then determine learning through a posttest.
C) Divide the elderly population into two randomly chosen groups,teach healthy lifestyles to one group,and then determine differences in knowledge between the two groups.
D) Screen each elderly person and look for patterns in the findings related to health problems that necessitate attention.