Final answer:
Carol-Ann Normandin displayed symptoms like malnutrition and motor difficulties but did not have chronic diseases or genetic abnormalities and could not vocalize normally.
Step-by-step explanation:
According to the passage, Carol-Ann Normandin exhibited several symptoms but there is no mention of her suffering from any chronic diseases or genetic abnormalities. She experienced severe malnutrition and had difficulties with motor skills such as walking and standing without assistance, displaying an unusual sideways walk. Additionally, she did not exhibit the ability to vocalize normally, as she could not communicate through words or gestures and did not respond to stimuli that would typically cause pain.