Vic wants to do a sampling study of people with panic disorder. his sample should

I believe the answer is: be representative of the larger population of people with the disorder.

If his finding does not represent the treatment of the larger population, any proposal regarding its treatment or management would not be seen as valid within the scientific field. Because of this, vic need to ensure that his sample population need to include all genders along with wide variety of age and ethnicity.

a photo collage of women at work during world war 2