Brexit refers to:
AEU dissolution
BUK joining NATO
CUK leaving the EU
DBritain leaving Commonwealth
Answer & Solution
Correct answer: C. UK leaving the EU
1. UK voted 52-48 to leave EU in June 2016 referendum.
2. Formal withdrawal completed on 31 January 2020.
3. Transition period ended 31 December 2020.
__Source: NCERT Class 12 Contemporary World Politics — EU developments__