The Four Doors

A man must be punished for his crimes, he can pick between 4 doors. The first is a door that holds assassins lurking in the shadows, the second, a door full of many lions who haven’t eaten in a year, the third, an electric room, and four, a room filled with fumes that will kill him in less than a minute. The man chooses a door and survives. Which door did the man choose?