The correct answer is Konrad Zuse.
Konrad Zuse was a German computer scientist and engineer who is considered to be one of the pioneers of computer science. He built the world’s first binary digit computer, the Z1, in 1936. The Z1 was a relay-based computer that was able to perform basic arithmetic and logical operations.
Ken Thompson is an American computer scientist who is best known for his work on the Unix operating system. He did not build the Z1.
Alan Turing was a British mathematician and computer scientist who is considered to be one of the fathers of theoretical computer science and artificial intelligence. He did not build the Z1.
George Boole was an English mathematician and logician who is best known for his work on Boolean algebra. He did not build the Z1.