The answer for this question is A
Answer:
Generally, hyphens are used to join two words or parts of words together while avoiding confusion or ambiguity. Consult your dictionary if you are not sure if a hyphen is required in a compound word, but remember that current usage may have shifted since your dictionary was published.
Explanation:
The long, winding corridor is illuminated with oblong skylights
C) The book what I bought is full of pictures of animals.