The bolded word here is the BESTSELLER. This kind of complement is a direct object complement. The adjective overnight denotes to the object bestseller which is an adjective. Another adjective complements another adjective, thus, the term direct object.
A simile is a comparison of one thing to another, for example "smart as a fox".
The only comparison to something else that I find in the lines above is "like the rusty latch" - and this is a simile. The correct answer is then a) .
I'm pretty confident your answer is adjective. Hope this helped!
The correct answer that best fits the given statement above is the first option. In a Greek Drama, the purpose of the Prologue was to provide necessary backstory. It tells some earlier story and then links this to the main story. It is also the means to introduce the characters as well as their roles.
As long as its not treated since Ebola is a bacteria that can thrive and repopulate.