John McCarthy is considered to be the “father” of artificial intelligence. He coined the term “artificial intelligence” in 1955 at the Dartmouth Workshop, which is considered to be the founding event of AI research. McCarthy was a professor at Stanford University and a co-founder of the Stanford Artificial Intelligence Laboratory. He also played a key role in the development of the Lisp programming language, which is one of the most widely used languages for AI research.
Fisher Ada was a British mathematician and writer who is considered to be one of the first computer programmers. She is best known for her work on Charles Babbage’s Analytical Engine, which was a mechanical computer that was never built. Ada wrote a series of notes on Babbage’s work, which were later published as a book called “Ada’s Notes.” These notes are considered to be the first computer program.
Allen Newell was an American psychologist and computer scientist who is considered to be one of the founders of cognitive science. He is best known for his work on the General Problem Solver, which was one of the first artificial intelligence programs. Newell was a professor at Carnegie Mellon University and a co-founder of the Allen Newell Institute for Cognitive Science.
Alan Turing was a British mathematician, computer scientist, logician, cryptanalyst, philosopher, and theoretical biologist who is considered to be one of the most important figures in the history of computer science. He is best known for his work on the Turing machine, which is a theoretical model of computation. Turing also played a key role in the development of the Enigma machine, which was used by the German military during World War II.
Therefore, the correct answer is John McCarthy.