2. PART B: Which detail from the text best supports the answer to Part A? A. "Scientists used an enzyme known as CRISPR/Cas9 as their scissors. It snipped out the faulty gene, which can lead to heart failure." (Paragraph 1) B. "If all embryos reject added DNA repair patterns, researchers may struggle to fix mutations in embryos." (Paragraph 12) C. "One concern about gene editing is that ‘off-target’ cutting could create errors in other parts of a cell’s DNA." (Paragraph 14) D. "Such studies might one day involve editing embryos in the lab, then implanting these into a woman to establish a pregnancy." (Paragraph 16)