Answer:
Option D, to inform readers of the reasons why the Grimms
collected their tales
Step-by-step explanation:
The Grim brothers have a firm belief that the actual form a culture which is the most natural one is linguist and is dependent on history and in order to understand and follow it Grim brothers discovered and saved the fairy tales. This objective of Grim brothers has been displayed through their essay. The Grim brothers got motivated to do so because they believed that industrialization in long run would erase these classics from memory and hence these stories need to be protected.
Option D is correct.