What are some common signs of shock?

The correct choice highlights symptoms commonly associated with shock. When a person is in shock, their body's vital organs are not receiving enough blood flow, which can lead to a range of physiological responses. Sweating is often observed as a result of the body's stress response, while vomiting can occur due to the distress signals being sent throughout the body. Additionally, grey skin indicates inadequate blood circulation, often a sign that the body is struggling to maintain oxygenated blood flow to vital areas.

The other options list symptoms that either don’t align with shock, like blurred vision and fever, which may suggest other medical conditions. A welcoming attitude and calm demeanor are not characteristics of someone in shock; instead, they would typically exhibit confusion or disorientation due to their condition. Recognizing these symptoms is crucial for providing timely medical assistance to those experiencing shock.