An introduction has several purposes. which of the following choices would best accomplish the purpose of gaining an audience’s attention?

I would go with giving the statistics of how many people die in a car accident because they didn’t use their seat belt.  It is a straight forward approach that will definitely catch the attention of the audience. The number alone will stop and make them think about it.

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.