While caring for a toddler receiving oxygen via face mask, the nurse observes that the child's lips and nares are dry and cracked. Which intervention should the nurse implement?

Choice A reason: Applying petroleum jelly is not recommended because it is not water-soluble and can potentially be inhaled into the lungs, posing a risk.Choice B reason: Using a topical lidocaine analgesic is not suitable for cracked lips and nares, as it is intended for pain relief rather than moisturizing.Choice C reason: Asking the mother what she usually uses on the child's lips and nose is helpful for gathering information but does not provide an immediate intervention.Choice D reason: Using a water soluble lubricant is appropriate because it helps to moisturize the dry and cracked areas without posing a risk of inhalation, ensuring the child's comfort and safety.