Which would most likely be the ph of a highly corrosive acid

The most likely ph of a highly corrosive acid would be 1. because one is the most acie on the ph scale. the lower the number, the higher the acidity. 

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later