When a performer closely resembles in real life the character to be enacted, this is known as?

Which of the following starements is true based on the above information?

Identify the example of when situation and time are key to assessing risk of harm in a research study: a study on the efficacy of a behavioral intervention for smoking cessation involves both adults and teenagersasking women if they have had an abortionresearch on the prevalence of hiv-infected individuals in communitiesa survey about sexually transmitted diseases

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society