I believe it is
To emphasize that Egyptians even those who are highly educated mistrust social media
I would say A, that seems like the best answer! :)
B, you need to give the reader basically a reason to read it so you give the hook and the topic of the sentence so basically what the story is going to be about.
The study of the structure of a human or an animal body.
I would say that a character who is a stereotype has an over the top, exaggerated personality.