Final answer:
The passage from "We Both Live in the Same Village" by Rabindranath Tagore develops the idea of a shared community and interconnectedness, which is characteristic of Tagore's exploration of collective experiences within a unified social space.
Step-by-step explanation:
In the passage from "We Both Live in the Same Village" by Rabindranath Tagore, the idea most prominently developed is a) The idea of shared community and interconnectedness. This thematic element can be inferred from the title itself, which emphasizes a mutual habitation within the same village, hence a common collective experience. Furthermore, the essence of Tagore's writings often revolve around the concepts of human bonds and shared social, emotional, and spiritual spaces which solidify the sense of community.
Contrary to options b, c, and d, which suggest cultural diversity, conflict within a village, and isolation in a village, respectively, the selection focuses on how individuals within a specific locale connect with each other, regardless of their potentially varying backgrounds, to form a cohesive unit. Tagore's work typically traverses the nuances of human relationships and their connection to a larger web of life, favoring themes of union and togetherness over isolation and discord.