Final answer:
The cause of Michael Jackson's death was acute propafol intoxication, which led to respiratory arrest, and the manner of death was ruled a homicide.
Step-by-step explanation:
The cause of Michael Jackson's death was I acute propafol intoxication. This was a result of a lethal amount of the anesthetic propafol, which led to his untimely passing on June 25, 2009. While the manner of death was ruled a homicide, indicating that the actions of another person led to his death, and the mechanism was respiratory arrest, the direct cause is the intoxication due to the propafol overdose.