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>A topic outline arranges your
ideas in chronological order in the sequence that you want and it also shows
what you will talk about. On the other hand, a sentence outline is the same as
the topic outline but the difference s instead of words, sentences are placed
in it. It shows exactly what you are trying to say about the mini topics. It also
expresses the specific and complete idea of the topic in that specific topic. This
is one of the disadvantage of a sentence outline. It takes time to make the
sentence for your topic. The answer is letter B.</span>
Parallelism hope this helps if not sorry not sorry
