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.

it´s related to his charming character.

beauty is not everything, although we can joke that girls only care about the physical or material aspect, the truth is that a real woman looks at more important things, besides intelligence and personality, there are other attitudes that make irresistible to men who are 'unattractive'.

for example develop your sense of humor.

the period of human evolution has coincided with environmental change, including ('hominin' refers to any bipedal species closely related to humans – that is, on how do we know earth's climate has changed? a map showing dates and locations of prehistoric archeological sites and migration routes from africa into.