What changes did the invention of the radio bring to americans?
it gave americans a way to listen to sporting events instead of attending them.
it gave americans new ways to communicate with friends and family.
it made americans more isolated because they listened to the radio alone.
it provided americans with a way to hear the news as it happened.

It provided Americans with a way to hear the news as it happened

Explanation:

The radio was a revolutionary invention, and it changed the manner in which the people were receiving information. Instead of waiting for the newspapers, or waiting for the word to spread out, the radio offered information in real time. This gave the Americans an opportunity to know what is happening in their country and the rest of the world almost instantly, thus they were able to gather much more information, much more easily, and in less time.

so they can differentiate themselves from others as they saw themselves as the superior race. the star was basically a symbol that meant you are a less of a person than i am because of my race. the star was also degrading for those who had to wear it because they were aware of this and the nazis used the notion to make them feel less like a person.

i believe your answer is d)