The language used for artificial intelligence is:

🧠 Explanation:

Lisp is a programming language widely used in artificial intelligence due to its flexibility in handling symbolic data and recursive functions. Developed in 1958 by John McCarthy, Lisp supports rapid prototyping and complex problem-solving, making it ideal for AI applications like natural language processing and expert systems. Its unique parenthetical syntax and dynamic typing enable efficient coding for AI algorithms. Lisp’s influence extends to modern languages, and its adaptability remains valuable in research and development, particularly for tasks requiring symbolic manipulation, cementing its status as a foundational tool in artificial intelligence and computational theory.