The answer to this question would be: <span>B. Receptor site
The receptor site of a neurotransmitter often only receives a specific kind of transmitter. That was because the receptor has a unique 3D structure, so different transmitter wouldn't fit into the receptor. That was similar to lock and key principles.</span>
1. Ethics Committee
2. Advance Directive
3. Emancipated Minor
Hope this helps!
Peers are influencing how Andrew thinks about what is normal behavior.
