Final answer:
The nurse should use surgical masks (option C) with caution when caring for a client suspected of having a latex allergy due to the latex content in surgical masks.
Step-by-step explanation:
When caring for a client suspected of having a latex allergy, the nurse should use surgical masks with caution. Latex allergies are a type IV hypersensitivity, also known as delayed hypersensitivity. Hypersensitivity reactions occur when the immune system overreacts to a specific substance, in this case, latex. Surgical masks are typically made from latex, so using them without caution can potentially trigger an allergic reaction in the client.