Question: Scientists discovered that although infectious bacteria may develop immunity to antibiotic medications, some bacteria are unable to resist certain peptides, which act as natural antibiotic substances inside the human body. This discovery led to the development of which new technology?

  Options: 
 A. artificial substances that mimic human peptides
 B. antibiotics that can be absorbed through the skin
 C. bacteria that attack antibiotic-resistant organisms
 D. antibiotics that adapt in response to bacterial immunity 
Answer: A