Read this excerpt from president roosevelt's four freedoms speech:
it is true that prior to 1914 the united states often had to be distributed by events other continents. we had even engaged in two wars with european nations and in a number of undeclared wars in the west indies and the mediterranean and in the pacific for the maintenance of american rights in for the principles of peaceful commerce. but is no case had a serious threat being raised against our national safety or our continued independence

what is the theme if this excerpt?

a. america's history as a peaceful nation
b. the responsibility for americans to avoid involvement in war
c. a new kind of threat to american security
d. america's history to international involvement

Announcer two: ladies and gentlemen, following on the news given in our bulletin a moment ago, the government meteorological bureau has requested the large observatories of the country to keep an astronomical watch on any further disturbances occurring on the planet mars. due to the unusual nature of this occurrence, we have arranged an interview with noted astronomer professor pierson, who will give us his views on the event. in a few moments we will take you to the princeton observatory at princeton, new jersey. we return you until then to the music of ramón raquello and his orchestra. the passage is from the transcript of the radio adaptation of the war of the worlds by h. g. wells. instead of including expert interviews, h. g. wells uses a narrator to tell about an alien invasion that occurred a few years earlier. by including expert interviews, how does the radio broadcast change the story most effectively? o.a. it puts the story in the past tense, increasing its personal tone. o o b. it makes the broadcast sound more like a fictional story. o o c. it makes the broadcast sound like a news report. o d. it makes the story sound less believable by changing who presents the story's details.