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
Increase in threshold level on applying subthreshold, slowly rising stimulus is kia 
Select and explain. 
A. Adaptation, B. Accomodation, C. Refractoriness, D. Electrotonus
B: Accomodation
Answer: B: Accomodation 
Explanation: B i.e. Accomodation