The author implies that in order to really boost the imagination of the reader, the author should have a strong sense of where their story is taking place. The examples he gives first are authors who describe nature in a lot of detail in their stories. The second set of authors he gives as an example are authors who build completely new worlds of their own. In all examples, "place" or setting is really well described. The author is saying that if you can describe every detail of your setting in a way that you can close your eyes and see it clearly, the reader will then be able to use their imagination better to see the place also.
<span>Lack of economic opportunity and unemployment (14.2%) ... <span>Food and water security (15.1%) </span></span>
Voluntary responses are mainly under your control, while an involuntary reaction happens without someone knowing they're actually doing it. This can play a role in ignorance by for example, if someone is Muslim and a person involuntarily scoots away from them or gives them a hurtful glance. Which they could not realize they're being rude and even not realize they are doing it, it's just what they do from that learned habit.
Hope this helps! If you need a different example, let me know! :-)
The correct answers would be options C: " Americans have always fought to uphold human rights and correct injustices against them" and D: "Americans have always been peaceful but should be willing to go to war to defend their allies". In the excerpt, Franklin Roosevelt gives various references to the fact that Americans have participated in wars before, but, always to defend justice and honor (as exemplified in the correct answers) and never with the intent of "dominating the world". And there is no mention of Germany or isolationist tendencies, therefore options A, B and E are incorrect.