I believe the answer is twitter
Answer:
A - acid
When the pH of something goes over 7, it is considered a acidic substance, because it is not safe/authorized for any humans to drink it. Also, you ca not drink something below the pH of 6 because it is an alkaline, which is also not safe to drink.
This is the Torah. In its five books one can read, among others, about the creation of the world and very early patriarchs (Genesis), about the time when the Jews left Egypt (Exodus) and their life on Sinai (Numbers)