When should a speaker use an interjection? Please help if you would like brianleist! (No links and no dleting the answer tysm!!) :) when he wants to show how two ideas are different from each other

when some listeners seem bored

when he wants to make a strong point about something

Which of the following world and national events led to a new view of people with disabilities in the us:     a.  world war i and ii veterans with disabilities returned home after the wars. b.  john f. kennedy was elected president and had a sister with a disability. c.  the civil rights and feminist movements. d.  all of the above.