Final answer:
The symptoms described align with Separation anxiety disorder, where a child excessively worries about the separation from parents or loved ones.
Step-by-step explanation:
The student has described symptoms of a disorder typically characterised by a child's persistent worry about the safety of oneself, their parents, or other loved ones, which best corresponds to Separation anxiety disorder (A). Separation anxiety disorder involves excessive fear or anxiety concerning separation from home or from those to whom the individual is attached. This condition is frequently identified during childhood and can affect day-to-day functioning. In comparison, Panic disorder (B) is characterized by unexpected and repeated panic attacks, Specific phobia (C) entails an intense, irrational fear of specific objects or situations, and Obsessive-compulsive disorder (D) includes persistent, intrusive thoughts (obsessions) and repetitive behaviors (compulsions).