An increase in which of the following properties will not increase the rate
of a reaction? *

An increase of enthalpy will not increase the rate of a reaction. It’s considered as the constant of an experiment. It doesn’t have an effect on the kinetic or potential energy regarding the heat and pressure of surface area. So the volume won’t change nor the temperature.

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