A is based on specific characteristics that have been predetermined as representative of the target population. Those characteristics may be based on demographics, such as age, income, ethnic background, shared attitudes about a product or service, such as satisfaction/dissatisfaction, or behavior, such as patronage or product useronuser. simple random sample systematic random sample stratified random samples quota sample Question 10 (1 point) What is the fastest and most cost-effective form of primary source research? experiment interview observation questionnaire