Question

what is the primary function of neurotransmitters in the brain? to act as structural components of neurons to facilitate communication between brain cells to prevent the transmission of messages between neurons

Explanation:

Neurotransmitters are chemical messengers. Their main role is to carry signals across the synapse between neurons (brain cells), enabling communication. The first option is incorrect as neurotransmitters are not structural components. The third option is wrong because they help, not prevent, message transmission.

Answer:

B. to facilitate communication between brain cells