Here's an example of a hook that you could use for your topic:
"It's now or never."
You may have heard this saying before, but have you really thought about its meaning? If you don't take a chance, you may never have the opportunity to work towards making your dreams come true. It is vital to take chances: otherwise, what's the fun in trying so hard?
The Author presents a series of interesting, partially related facts to support his argument that smallpox devastated mankind over the centuries.
The option of a Historical Timeline is not correct because only the example of the decline of the Roman Empires states an actual date ( AD 108).
The option of an alternative claim is also incorrect because there is no such a claim.
The option of details of a historical incident seems to be correct but is not because there are several historical events presented and there is not a single detail on them.
So the correct option is the last one interesting, partially related facts.
It means to properly understand what the writer means (and assume their intentions, feelings)