Final answer:
The term for a child who is unreactive when touched is 'Unresponsive,' which indicates a need for immediate medical attention. The question also relates to a 'neutral stimulus,' which is an event that does not naturally elicit a response, contrasting with an 'unconditioned stimulus' that automatically triggers a reaction.
Step-by-step explanation:
The term for a child who does not move, speak, blink, or otherwise react when touched is Unresponsive. This lack of response to stimulation suggests that the child is not conscious or aware of their surroundings. It is crucial in such situations to seek immediate medical attention as it can be a sign of a severe medical condition. In contrast, a hyperactive child would exhibit excessive movement, an anxious child may be apprehensive or nervous, and a talkative child would be engaging in conversation frequently.
Referring to your provided choices, a stimulus that does not initially elicit a response in an organism is known as a neutral stimulus. An unconditioned stimulus, on the other hand, is something that naturally and automatically triggers a response without any learning process involved.