<h2>D.) Fewer ion channels will open in the postsynaptic cell.</h2>
Explanation:
The correct answer is option D, because neurotransmitters bind to receptors which are locate on dendrites, causing ion channels open. In addition, the postsynaptic membrane is the membrane that receives the signal. So, if fewer ion channels will open in the postsynaptic cell, means the number of receptors will be reduced, because the membrane will receive less.
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