Correct option is A
Both A and R are true but R does not explain A
It is accurate that history, geography, political science, and economics constitute key disciplines within social science, each offering unique perspectives on human behavior, societal developments, and the interplay between humans and their environments. Additionally, the statement that there is an interrelationship between these discipline is true, as they often draw upon each other to provide a more comprehensive understanding of complex social phenomena. However, the existence of interrelationships between these disciplines does not serve as an explanation for why they collectively make up social science. Instead, these interrelationships enhance the depth and breadth of social science research and education by allowing for interdisciplinary approaches to studying human society. The assertion that these disciplines make up social science is based on their collective aim to understand and analyze the various aspects of human societies and behaviors.