While fear and joy both share similar ________,they have different ________.

A) levels of insula activation;physiological responses
B) physiological responses;facial expressions
C) facial expressions;levels of insula activation
D) activity in the parasympathetic nervous system;activity in the sympathetic nervous system

Fear and joy both elicit physiological responses, such as changes in heart rate, but they differ in their facial expressions. Fear typically produces a facial expression characterized by widened eyes and an open mouth, while joy produces a facial expression characterized by a smile and raised cheeks. Option A is incorrect because while both fear and joy may activate the insula in the brain, they do not necessarily activate it to the same degree. Option C is incorrect because while facial expressions may be involved in both fear and joy, they do not differ in their levels of insula activation. Option D is incorrect because fear and joy can both activate both the sympathetic and parasympathetic nervous systems depending on the context.