Which of the following best describes the UK constitution?

The UK constitution is best described as flexible and based on statutes, common law, and conventions. This reflects the unique nature of the British system, which is not codified in a single document like many other countries. Instead, the UK constitution is an unwritten, or rather, partially written, collection of various sources including statutes passed by Parliament, legal precedents established by court rulings, and conventions that have evolved over time through political practice.

This flexibility allows the constitution to adapt to changing political and social circumstances without the need for a formal amendment process, which is often lengthy and complex in countries with a rigid constitution. This adaptability is a critical feature of the UK’s constitutional framework, enabling it to respond to new challenges and shifts in public policy.

The other options do not accurately capture the essence of the UK constitution: it is not primarily based on European law, as the UK constitution encompasses a broader range of legal sources; it is not contained within a single written document; and there is no requirement for a two-thirds majority for amendments, reflecting its more fluid and evolving nature.