The correct option is C Human insulin
In the 1980s, researchers used genetic engineering to manufacture a human insulin. In 1982, the Eli Lilly Corporation produced a human insulin that became the first approved genetically engineered pharmaceutical product. Human insulin is grown in the lab inside common bacteria. Escherichia coli is by far the most widely used type of bacterium used. Synthesizing human insulin is a multi-step biochemical process that depends on basic recombinant DNA techniques and an understanding of the insulin gene. DNA carries the small segment of the DNA, the insulin gene, which codes for the protein insulin. Manufacturers manipulate the biological precursor to insulin so that it grows inside simple bacteria.