Final answer:
Recombinant DNA technology is used to produce a range of medications, including the hepatitis B vaccine, human insulin, and human growth hormone. Hence, all the listed options, a. hepatitis B vaccine, b. insulin, c. human growth hormone, are correct.
Step-by-step explanation:
Recombinant DNA technology has played a critical role in medicine, particularly in the production of various pharmaceuticals. One of its remarkable achievements is the production of medications such as the hepatitis B vaccine, which is used to prevent hepatitis B infection. Furthermore, recombinant DNA technology has enabled the production of human insulin, previously sourced from animals but now manufactured using genetically modified bacteria, reducing the risk of allergic reactions in diabetic patients. In addition, human growth hormone (HGH), beneficial in treating growth disorders in children, is now produced using this influential technology.
Considering these points, recombinant DNA technology is used to produce a variety of medications, which include the hepatitis B vaccine, insulin, and human growth hormone. So, the correct answer to the question is d. all of the above.