Which of the Following Historical Events and Technology Brought New

Which of the following historical events and technology brought new sexual perspectives and possibilities?

A) U.S. involvement in World War I created an environment for increased equality and flexibility of gender roles.
B) American men serving as soldiers in Europe were introduced to the more open sexuality there.
C) The advent of movies presented restricted outings for public entertainment.
D) Henry Ford's mass-produced automobiles of the 1920s provided increased independence and privacy for young people's sexual explorations.