Which of the following cities is known as the oil capital of Europe?

The answer is B) Aberdeen, a Scottish city on the North Sea coast. Its claim rests on the North Sea oil and gas boom that followed the discovery of the Forties field (1970) and the Brent field (1971). Aberdeen became the service base for offshore platforms, with supply vessels, helicopter links and engineering firms, and the title 'Oil Capital of Europe' follows from that concentration of activity.

Why the others are wrong: Belfast is known for shipbuilding (Harland and Wolff) and aerospace, not oil. Leeds is a financial and services hub in Yorkshire, and Liverpool is a port on the Mersey known for trade and docks, not offshore energy.

Core concept: resource-based urbanisation and energy geography. It links to GS-I (economic geography of Europe) and GS-III on energy security and offshore hydrocarbon development. North Sea output has declined from its peak, so Aberdeen is now diversifying into offshore wind and decommissioning work, which is worth knowing for current affairs.

Trap: Many candidates pick Stavanger, Norway's oil city, because it is also a major North Sea hub. Stavanger is a national oil capital, not the European one the question asks for.