Read the given passage carefully and select the best answer to each question out of the five given alternatives.

One famous little boy, Charlie Gard, was denied experimental medical interventions because a British court determined it was not in his best interest. Much more quietly, in an American laboratory in the past year, 'many tens' of tiny humans were destroyed once their bodies were no longer useful to the more powerful humans who created them.

Last week, MIT Technology Review broke the story of an Oregon scientist who had successfully manipulated the genetic makeup of embryos. These embryos were intentionally conceived through IVF with the potential for a disease of the heart muscle called Hypertrophic cardiomyopathy. Using the gene-editing technique called CRISPR, Dr. Shoukhrat Mitalipov and his team were able “to safely and efficiently correct defective genes that cause inherited diseases.” It was a breathtaking development.

And then the embryos were discarded.

By order of Congress, Dr. Mitalipov could not let those 'edited' children live. Scientists could, apparently, conceive and then manipulate the genetic makeup of these children without fear of government response. But those children could not be allowed to be born.