Answer: They promoted enlistment and other patriotic activities.
Step-by-step explanation:
The entertainment industry during World War II served as a source of information about the country's war effort and motivated people to commit to the cause of the war. War propaganda flooded the radio, film, and music industries. Particularly in the film industry, there were lots of explicit and implicit propaganda about war, aimed to keep the civilian spirits high and to show the war in a positive way. This was important for a government that understood that a supportive home front was essential to achieve victory.