Answer: Option B
Explanation: Neurotransmitters are the chemicals that enables the neurotransmission. It is a type of chemical messenger that can transmit the signals in the form of chemicals across a synapse or a neuromuscular junction.
They help in day to day function by transferring the signals.Their exact number is not known till yet but there are more than 200 neurotransmitters that helps to make the life easy.
