Final answer:
The Payne Fund Studies found that three-quarters of movies addressed themes of a. crime, sex, and love, highlighting concerns about their influence on youth.
Step-by-step explanation:
In the Payne Fund Studies, which were a series of studies conducted in the 1920s and 1930s to assess the impact of movies on the behavior of children and adolescents, researchers found that three-quarters of movies in their study predominantly dealt with three themes: crime, sex, and love. These themes were considered significant because of their suspected impact on the values and behaviors of young people. The Payne Fund Studies were groundbreaking in their time for addressing the influence of media on youth, and they have paved the way for further research in the field of media studies.