Each winter since 1980, a family measures the snowfall in their yard and records the yearly average. This average is most common when describing what feature of the area A weather
B climate
C water cycle
D erosion patterns

Ithink the answer is a or d.

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