Correct Answer: Stanley Miller

Solution : The correct answer is Stanley Miller.

In the laboratory, Stanley Miller and Harold Urey demonstrated that life began with chemosynthesis. Miller and Urey undertook an experiment in 1952 to recreate the circumstances that occurred on early Earth. They put water, methane, ammonia, and hydrogen in a sealed chamber and ignited the mixture with an electrical spark. After a week, they discovered that the mixture included a range of chemical components, including amino acids, which are the building blocks of proteins.