The letter A is the one that represents a neurotransmitter acting via direct effects.
<h3>What is a neurotransmitter?</h3>
These are chemical messenger that helps carries signals across the neurons and target cells throughout the body.
Hence, the letter A represents a neurotransmitter acting via direct effects because its involves direct connection between the neurons.
Therefore, the Option A is correct.
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<em>brainly.com/question/26387085</em>
To prove frauds, we need to show that <span>The innocent party relied on the wrongdoer's representation.
If the accused in fraud case represent true representation despite the negative effect that experienced by the accuser than the court will rule that the accuser just make a really bad business decision rather than being scammed.</span>