Final answer:
The Masters and Johnson study differed from the Kinsey Report and the Janus Report by observing sexual behavior and physiological responses in a laboratory instead of using interviews and surveys. So, the correct option is C. Masters and Johnson's study
Step-by-step explanation:
Masters and Johnson's groundbreaking study on sexual behavior differed from the survey-based methodologies of the Kinsey and Janus Reports.
Instead of relying on interviews or surveys, Masters and Johnson conducted meticulous observations in a laboratory setting, documenting nearly 10,000 sexual acts.
Their focus on physiological responses, such as blood pressure and sexual arousal, set their research apart. By directly studying real-time sexual behaviors, they provided a more objective and detailed understanding of human sexual physiology.
This methodological departure from surveys allowed Masters and Johnson to contribute invaluable insights into the intricacies of sexual response and paved the way for a more scientific exploration of human sexuality.
So, the correct option is C. Masters and Johnson's study