Answer:
D) A bacteriophage that has been modified to carry the gene.
Explanation:
To achieve her goal, she should use (d) A bacteriophage that has been modified to carry the gene. Bacteriophage are diverse group of viruses which are easily manipulated.
D. cell wall
both animals and walls have cell membranes for support
the cytoplasm holds the organelles in place
This is not biology but i can probably help so get the surface area, then get the volume. and divide this is usually how ratios work, leave it a fraction, simplify if necessary