Answer :
Option B, Genetically altered plants could make it into the human food chain is not a reasonable concern about CRISPR-Cas9's ability to edit human cells.
Large DNA deletions at target locations caused by CRISPR/Cas9 are a significant safety concern. These substantial deletions can have a base-pair range human cells of several hundred to several thousand . It is yet unknown what process led to the formation of these significant deletions. 1) the extent to which CRISPR usage should be allowed; 2) access to CRISPR applications; and 3) if a regulatory framework (or frameworks) for clinical research involving human subjects should include all forms of human genome editing, including editing of the human cells.
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