i think it's contact, dynamic, and regional
hope this helps
Its called the convolution
also known as the Gyrification of the brain, it increase the brain surface area , allowing more neuron capacitiy to process information
its located in cerebral cortex and become a place where our brains store our memories.
I say A they dont neither grow or lower. and if they do they go back to normal
The answer is.. C, Network!