Social Science (087) — AI-generated practice question

Transport, communication and trade are complementary because each supports and depends on the others to function effectively.

Meaning: Transport moves goods from places of production to places of consumption. Communication provides information about demand, supply and prices. Trade is the actual exchange of goods and services. Together, they form a complete economic system — none can work efficiently without the other.

Example: A farmer in Punjab grows wheat (production). Through communication (telephone/internet), he learns about demand in Mumbai. Transport (railways) carries the wheat there. Trade completes the exchange. If any one link breaks, the entire chain fails.

Source: Chapter 7 — Transport, Communication and Trade (Introduction)

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• The examiner expects you to define what complementary means in this context and then give a connected example showing all three — transport, communication, and trade — working together.
• Don't treat them separately; show how they link to each other in one chain.
• A relatable Indian example (farmer, trader, etc.) scores well and shows application of the concept.
• 3 marks = definition/explanation (1–2 marks) + example (1 mark).