Which of the following is a common sign of a crisis?

A flushed face is indeed a common sign of a crisis, as it often indicates physiological changes in response to stress, anxiety, or heightened emotional states. During a crisis, individuals might experience elevated heart rates and increased blood flow, which can manifest as a flushed appearance. This response is part of the body's fight-or-flight mechanism, where stress hormones are released, preparing the individual to respond to the perceived threat.

In contrast, fainting typically suggests a deeper medical issue, such as a sudden drop in blood pressure or blood flow to the brain, which may not directly relate to a crisis situation. A weak pulse can also indicate medical distress or shock rather than a standard response in a crisis. Emotionally subdued behavior, while it can occur in the aftermath of a crisis, is not a ubiquitous sign of a crisis itself; rather, it suggests a response to overwhelming feelings rather than the active, heightened emotional state often associated with a crisis. Therefore, the flushed face serves as a visible indicator of the immediate physiological effects of stress or crisis situations.