Identify the signs that may indicate a dog is preparing to run away.

The signs that may indicate a dog is preparing to run away include low body posture and scanning the area for exits. When a dog adopts a low body posture, it often suggests a sense of insecurity or fear, which can lead to flight behavior. Scanning the area for exits indicates the dog is actively seeking a way to escape, displaying awareness of its surroundings and readiness to take off if the opportunity arises. This behavior suggests that the dog feels the need to escape its current environment, making it a key indicator of potential runaway behavior.

Other options depict different states of a dog's behavior. Barking loudly and jumping typically indicate excitement or playfulness, rather than a desire to escape. Sitting still and wagging its tail usually signify a relaxed dog that is comfortable and happy, and running in circles and playing shows a dog engaged in playful and social behavior. None of these behaviors suggest an intention to run away.