Which of the following is a sign that a rider may be uncomfortable or in distress while riding?

A rider who is grimacing or tensing their muscles clearly indicates discomfort or distress. This physical response often signals that the rider is experiencing pain or anxiety. Grimacing might involve facial expressions that suggest discomfort, while muscle tension can restrict natural movements, which is important for a safe riding experience. Recognizing these signs is crucial for instructors to provide appropriate support and adjustments to ensure the rider's safety and comfort.

In contrast, signs of comfort and engagement would include smiling, maintaining a relaxed posture, and communicating freely with others. These behaviors typically suggest that a rider is enjoying the experience and feels secure in their environment. Understanding these differences enables instructors to create a positive and supportive atmosphere for those involved in therapeutic riding.