Answer:
B) It tells how the adjective describes the verb of the sentence.
Well the vowels are a, e, i, o, u and sometimes y
The sentence which contains an unnecessary word is C) The snake raised up its head and struck.
You don't need to use the word <em>up</em>, it is logical that is something is raised, it will be up.
It is true that the expressionist described the world outside the character through the character's moods and impressions.