Final answer:
Natural Nails is the best choice for Genevieve since it offers all-natural nail services with no harsh chemicals or toxic products, reducing the risk of an allergic reaction. Option c.
Step-by-step explanation:
Given that Genevieve had a prior allergic reaction to nail polish, it would be best for her to choose a nail salon that either uses hypoallergenic products or avoids the use of harsh and toxic chemicals altogether. The option within the provided choices that specifically mentions the absence of harsh chemicals and toxic products is Natural Nails.
The advertisement for Natural Nails states "All-Natural Nail Services-- No harsh chemicals-- No toxic products", making it a suitable choice for someone concerned about allergic reactions.
So option c is the correct option among the given options.