The answer choice which <em>best summarizes</em> the main idea of the excerpt is:
- D. Elion and her colleagues were responsible for developing important drugs.
Based on the given excerpt, we can see that there is the narration about the efforts which Ellon and her medical colleagues put into bringing medicines that were effective to the treatment of diseases.
This was shown by the evidence of how Ellon joined the Burroughs Wellcome Laboratories and worked for forty years to develop medicine that was effective against leukemia, urinary tract infections, and other sicknesses and diseases.
Therefore, the correct answer is option
Read more about prescription medicine here:
brainly.com/question/8508634
