Final answer:
The detail from the text that best supports the answer Part A on the proposed treatment to fix genetic diseases raising ethical issues is ethical concerns raised in the text.
Step-by-step explanation:
The detail from the text that best supports the answer Part A on the proposed treatment to fix genetic diseases raising ethical issues is Ethical concerns raised in the text. The text mentions that biotechnology has raised ethical, legal, and social issues, such as the safety of genetically modified foods and the control of a person's genetic information. These ethical concerns directly support the notion that the proposed treatment raises ethical issues.