It would be answer "a"- because if you are not putting the commas in, it would be just a run-on sentence. So, it would be, "World War II, which lasted from 1939 to 1945, was a global conflict involving nearly every nation in the world." Having the commas in will help the reader digest and sink the information in on what the topic is, without the sentence just running through without any commas. Hope this helps. =)
<span>1) In 'Inferno' as well as in the rest of 'Divine Comedy', Dante included a lot of elements from Bible and 'The Aeneid' by Vergil. Due to the lots of biblical elements this story can be defined as Biblical fiction and the depiction and meaning of Hell is a direct proof of this fact. Dante made a crossover of biblical and Vergilic elements describing his own personality in both allusional sacred way. </span>
2) Dante included such allusions because he wanted to represent the perception of human evil in its categorization into different realms. He categorized sins and described them gradually by their level of complexity showing that people tend to measure everything even sins that can lead them to the journey to the Hell.
The best answer in this scenario would be A.Revise her hypothesis and the retest it.Hope this helps, and have a marvelous day.