This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Learning by exposure to repeated stimulus is known as: 
Select and explain. 
A. Habituation, B. Sensitisation, C. Potentiation, D. None of the above
A: Habituation
Answer: A: Habituation 
Explanation: Habituation is a simple form of learning in which a neutral stimulus is repeated many times. Ref: Ganong's Review of Medical Physiology 23rd edition, Chapter 19.