Neurons are brain cells. Where would a new neuron come from?

New neurons are born not from mature nerve cells but rather develop from neural stem cells that remain in our brains throughout life. Indeed, in some brain areas, there is continual turnover of neurons - old ones die and new ones are born - and these new neurons can participate in circuits that underlie learning.

Ibelieve the answer is c

The slope best fit isc. 1/6 mile per hour