[A] Histamine
[B] Epinephrine
[C] Norepinephrine
[D] Dopamine
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The correct answer is [A] Histamine
The hormone that is synthesized from histidine amino acid is Histamine.
Histidine is an essential amino acid for mammals, fish and poultry since it is not synthesized and must be obtained through the diet.
Histamine is a vasodilator that has several important roles, such as being part of the active site of enzymes.