a. cultures
c. time periods
b. literary forms
d. all of the above
Answer:
d. all of the above
Step-by-step explanation:
World literature refers to all the literature texts from all around the world. This includes all the text from all the countries, from different times in history and from the different genres that exist. So, according to this, the answer is that world literature texts come from a variety of cultures, time periods and literary forms which means that the right option is: d. all of the above.