Q.A trader in Andhra Pradesh needs to send a large quantity of iron ore, worth a relatively low price per tonne, from a port to a buyer in another country, and speed is not a priority for this shipment. Which mode of transport should the trader choose, and why?

Very bulky, low-value cargo moving long distance with no urgency is exactly the case water transport is cheapest and best suited for.

Step 1 — Identify the key facts. The cargo is iron ore: very bulky, low value per tonne, being sent a long international distance (port to another country), and speed is explicitly not a priority.

Step 2 — Rule out Air Transport. Air is the fastest mode but also the costliest per unit, and best suited to high-value, low-bulk, urgent cargo — the exact opposite of low-value bulky ore with no urgency.

Step 3 — Rule out Road Transport. Road offers flexible door-to-door delivery but has limited carrying capacity and is not practical or economical for an international sea crossing at all.

Step 4 — Rule out Pipeline Transport. Pipeline is restricted entirely to liquids and gases; iron ore is a solid, so pipeline transport does not apply here. …