Question 39 2 pts Which of the following is present when content experts and users agree that a survey instrument will be easy for study participants to understand and correctly complete? Content validity Criterion validity Face validity Construct validity Question 40 2 pts Before blood, urine, or other biological specimens are obtained, who is responsible for verifying that the potential risks to participants caused by the sample will be minimized? Institutional review board Primary investigator Research ethics committee Medical executive committee