Final answer:
Delegation is ineffective or inappropriate when the administration of medications is delegated to an LPN.
Step-by-step explanation:
The statement that represents a situation in which delegation is ineffective or inappropriate is B. The RN delegates administration of oral medications for a group of clients to the LPN.
In this scenario, delegation is ineffective because the administration of medications requires the expertise and knowledge of a registered nurse. Medication administration involves assessing the appropriateness of the medication, monitoring for any adverse reactions, and making necessary adjustments to the medication plan. Therefore, it is best for the RN to directly handle the administration of medications.