Final answer:
The necessary equipment to be taken into the room upon admission, before the client arrives, includes a Sphygmomanometer, thermometer, and pulse oximeter (Option A).
Step-by-step explanation:
The necessary equipment to be taken into the room upon admission, before the client arrives, includes a Sphygmomanometer, thermometer, and pulse oximeter (Option A). These are all essential tools for assessing the patient's vital signs and oxygen levels.