Could you attach a picture of the painting so i can better answer this?
"Exponential growth" means that the bigger it is, the faster it grows.
That's Choice 'D'.
The best answer to the question above would be letter d. The sentence presented which is 'Researchers helped further the biological perspective when they demonstrated that electrical stimulation of the brain could evoke emotional responses in animals.' demonstrates how new discoveries can influence perspectives.
Electron shell is the outer orbital, while the inner orbital are just called orbitals.
The nutrients that coats your nerves is something called myelin. Those like vitamin B and D can help out myelin sheath.