Final answer:
The negative outcome of labeling Jack with a disorder is that others may view him differently, which can lead to stigma and altered interactions. Therefore, the correct option is C.
Step-by-step explanation:
One of the significant negative outcomes of labeling Jack, an eight-year-old diagnosed with disruptive mood dysregulation disorder, is C. people may view Jack differently because of the label. This stigma associated with mental health diagnoses can influence how others perceive and interact with the individual who has been labeled. In the field of education and mental health, it's acknowledged that labels such as ADHD, autism, and intellectual disabilities have often carried negative connotations that affect students' self-esteem and interactions with others. Although a diagnosis is instrumental in receiving proper treatment and support, it comes with the risk of being misinterpreted and can lead to potential social ostracism.