The correct answer is option 3: Miller. The Miller-Urey experiment, conducted by Stanley Miller and Harold Urey in 1952, provided evidence for the possibility of life originating through chemical processes. In this experiment, they created a closed system that mimicked the early Earth`s atmosphere and exposed it to electrical discharges to simulate lightning. Over a week, they observed the formation of various organic compounds, including amino acids, which are the building blocks of proteins and essential for life. This experiment demonstrated that the simple building blocks of life can be formed from inorganic molecules under conditions resembling those of early Earth. Therefore, the Miller-Urey experiment supported the idea that life could have originated through chemosynthesis - the production of organic matter using inorganic substances as a source of energy.