Passage Summary: In the Middle Ages, people had to work together on big projects to survive, which made their communities very tight. The author believes that if we did similar group work today, our modern society would also become more connected.

Conclusion: Modern industrial societies would likely become more close-knit if they engaged in collective tasks similar to those performed in medieval times.

Reasoning: Medieval communities were cohesive because survival tasks, like harvesting crops, required people to cooperate and set aside personal disagreements.

Analysis: This is an 'Identify the Conclusion' question, so we are looking for the author's main point. The word 'so' in the final sentence acts as a conclusion indicator, signaling the transition from historical evidence to a modern-day prediction. The first two sentences function as premises that explain the mechanism—cooperation for basic needs—that the author believes would work just as well today.