(A) Hormones are classified based on their chemical nature. $1$. Epinephrine (also known as Adrenaline) is derived from the amino acid Tyrosine. $2$.

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(A) Hormones are classified based on their chemical nature. $1$. Epinephrine (also known as Adrenaline) is derived from the amino acid Tyrosine. $2$. Progesterone and Estrogen are steroid hormones derived from cholesterol. $3$. Prostaglandins are lipid derivatives (fatty acids). Therefore,Epinephrine is the correct answer.