Epidemiological studies:
You Answered
a/can establish that a risk factor causes a disorder.
b. overcome almost all of the limitations of correlational studies.
c. are generally unaffected by the problem of the third variable.
d. provide valuable information on the prevalence, incidence, and risk factors for disorders.

d.provide valuable information on the prevalence, incidence, and risk factors for disorders.

Explanation:

The study of disease distribution among the population is called epidemiology. Epidemiological studies are important to find out which risk factor is associated with that disease.  

Epidemiological studies are also used to gather information about the prevalence, incidence, and prevention of disease. This study is helpful in understanding the frequency of any disease and its cause. Knowledge of biology, statistics, sociology, etc is required in epidemiology.

Therefore the correct answer is d.provide valuable information on the prevalence, incidence, and risk factors for disorders.

steady state because it the only on that maes sense

answer: b. complete secondary assessment (detailed physical exam).

after you finished the primary assessment, you must proceed with the assessment by performing a complete detailed physical examination.

this secondary assessment includes a focused on patient’s history, vital signs and a specific and rapid examination of the entire body especially on the injuries acquired from the motor vehicle accident and the patient’s medical complaint.