The correct answer is "grammar"
Linguist is a person who studies languages, semantics is the science of word and sentence meaning, and arbitrary means that something is subjected to individual will or judgement.
Answer:
How fast a story moves
Explanation:
The pacing of a book is how fast the story moves for a reader. Think of it as the rhythm and flow of the book.
Happy learning!
--iiApplepii
I'm guessing you're identifing the verb in this sentence in that case the answer would be:
can be considered