What is a common physiological response to anxiety?

The correct choice, increased heart rate, is a well-documented physiological response to anxiety. When a person experiences anxiety, the body activates the "fight or flight" response, which is governed by the autonomic nervous system. This leads to a release of stress hormones such as adrenaline, which increases heart rate to prepare the body to respond to perceived threats. This heightened heart rate is part of the body's way of ensuring that more blood flows to vital organs and muscles, gearing up for a physical response.

In a state of anxiety, it's also common for other physiological changes to occur, such as rapid breathing, muscle tension, and increased blood pressure, all of which support the body's preparedness to react. Understanding this response can help individuals recognize their body's signals during anxiety-provoking situations and may lead to better management techniques.