Final answer:
The root in the term hallucination means imagination.
Step-by-step explanation:
In this context, the root in the term hallucination means imagination. Hallucination refers to a sensory experience that seems real but is actually created by the mind.
For example, if someone sees things that are not actually there or hears voices that no one else can hear, they are experiencing hallucinations. The term hallucination is derived from the Latin word 'hallucinari', which means 'to wander in the mind' or 'to dream'. Therefore, the correct answer is imagination.