Final answer:
The correct answer is option D. History.
Step-by-step explanation:
The subject of the war between the little-enders and the big-enders over how to crack an egg can be classified as Social Studies in the field of History.
This is because the conflict between the little-enders and big-enders is a satirical representation of the historical conflict between two factions in Jonathan Swift's novel Gulliver's Travels. In the book, the little-enders and big-enders are fictional groups who disagree on which end of a boiled egg should be cracked first. This satirical portrayal reflects the cultural and political debates of the time.
By studying this aspect of the book in a historical context, students can gain insights into the social, cultural, and political dynamics of the era in which the novel was written.