A. Fisher Ada
B. Alan Turing
C. John McCarthy
D. Allen Newell

Solution

C. John McCarthy

Explanation

The person known as the "Father of AI" is John McCarthy. John McCarthy was an American computer scientist who coined the term "artificial intelligence" in 1955 and is credited with organizing the famous Dartmouth Conference in 1956, which is considered the birth of AI as a field of study. McCarthy made significant contributions to AI research, including the development of the Lisp programming language, which became a key language for AI programming.