Final answer:
The classical transmitter of the sympathetic nervous system is noradrenaline, also known as norepinephrine.
Step-by-step explanation:
The classical transmitter of the sympathetic nervous system is norepinephrine, also known as noradrenaline. When discussing autonomic control, it is essential to distinguish between neurotransmitters and hormones because some chemicals can act as both, depending on the context of their release. In the sympathetic nervous system, postganglionic sympathetic fibers release norepinephrine at synapses, which makes it function as a neurotransmitter. Conversely, when the adrenal medulla releases norepinephrine along with epinephrine into the circulation, these chemicals act as hormones. Therefore, for a student's inquiry about the sympathetic nervous system, the correct answer is c) Noradrenaline.