The practical nurse (PN) and unlicensed assistive personnel (UAP) enter a client's room and find the client lying on the bed. The PN determines that the client is unresponsive. Which instruction should the PN give the UAP first?

A. Obtain emergency help. - This is the most urgent action as the client is unresponsive, and getting emergency assistance is crucial to providing immediate care. B. Feel for a carotid pulse. - While assessing the pulse is important, if the client is unresponsive, the first step is to get emergency assistance. C. Bring a glucometer to the room. - This action might be relevant for assessing specific conditions, but in this scenario, the priority is to seek immediate emergency assistance. D. Check the blood pressure. - Assessing blood pressure is important, but in the case of an unresponsive client, seeking emergency help takes precedence for immediate assistance and care.