Answer: The correct answer is "Separation Anxiety".
Explanation: Separation anxiety can be understood as the distress that an individual experiences when he/she is separated from someone they feel affection.
Objects of affection can be parents, pets, certain places, etc. When the separation occurs, the person feels anxious, fearful and hopeless.
Separation anxiety is commonly associated with children, but it can also happen to adults.
In this particular case, Joey is experiencing separation anxiety because he is separating from his mother.