Can some one me i didn’t understand the question

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

Moderate climates are located in regions. a. coastal b. interior c. mountain d. polar select the best answer from the choices provided a b c d

According to the law of supply,suppliers want to sell their product at prices