Two-year-old isabella has a red dot on her nose. when she looks into a mirror, she tries to rub off the dot. this behavior indicates that isabella is developing emotional contagion theory of mind self-recognition self-reflection

The correct answer is self-recognition. 
Self-recognition is defined as the awareness or knowledge about oneself, one's feelings, behavior and physical appearance. Toddlers develop self-recognition around 12-18 months of age. In the early stages of developing self-recognition, toddlers are able to recognize themselves in mirrors or photographs. In this instance, Isabella is developing  self-recognition because she recognizes that the person in the mirror is her itself and that there is something odd and unusual about her appearance (the red dot on her nose).