Step 1: Understanding diacetyl morphine.
Diacetyl morphine is a semi-synthetic derivative of morphine. It is commonly known as heroin, a highly addictive opioid drug.
Step 2: Analysis of options.
(1) Codeine – Another opiate but not diacetyl morphine.
(2) Heroin – Correct, diacetyl morphine is the chemical name of heroin.
(3) Cannabinoid – Different psychoactive compounds derived from cannabis.
(4) Coke – Common name for cocaine, not diacetyl morphine.
Step 3: Conclusion.
Thus, diacetyl morphine is (2) Heroin.