C2 is the highest level of proficiency in the Common European Framework of Reference for Languages (CEFR). At this level, individuals can understand and express themselves fluently and spontaneously in complex situations. They can read and comprehend a wide range of demanding texts, including abstract and literary works. People at the C2 level can also produce clear, well-structured, and detailed texts on complex subjects. They demonstrate a deep understanding of the language's nuances, idioms, and cultural references, allowing them to communicate effectively in both professional and social contexts.