Answer:
The correct answer is option A. Americans from coast to coast could listen to the exact same programming.
Step-by-step explanation:
Radio was first invented in the United Kingdom, and from there it spread. It became a reason for people from different coasts to listen to the same programs at once.
It shortened the distance between languages, dialects, awareness of what goes on, music and etc. It gave people the opportunity to learn about new cultures through different radio programs. It also allowed people to enjoy entertainment and sports in a rather different than usual way.