Great question!
When you understand that the person you are talking with is unable to shift his/her opinion, and starts getting mad. That's the best time to compromise, since not doing so might bring stress and conflict as you mentioned.
The correct answer would be true.
The receptor for smells are known as tastebuds which is answer D
Nerves. The brain and spinal cord are part of the CENTRAL nervous system, and the kidneys are part of the renal system.