What precipitate forms due to the reaction between CaCl2 and Na2S04? CaCl2 + Na2SO4 --> Na2Cl2

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

The answer for this question is d. none of these

The number of medals awarded to the track team during the season.