Final answer:
Genetically modified foods are held to the same safety standards as traditional foods, making them equally safe for consumption. Fruits like nectarines and seedless grapes are products of genetic breeding, which is a common practice.
Step-by-step explanation:
The best way of revising the second sentence for a presentation would be to rephrase it as: 'The Food and Drug Administration holds genetically modified foods to the same safety standards as traditional foods, ensuring that these new products are equally safe for consumption.'
The appropriate rewrite of the third sentence for a speech, but not an essay, would be option b. 'And I’m totally fine! Do you eat nectarines or seedless grapes? Then you already eat foods modified by genetic breeding.'