It is a naturally occurring, oily, flammable liquid composed principally of hydrocarbons. What is it?
Correct answer: Petroleum

Paulus of Tarsus
Player #5054749, correct. The substance is refined multiple times to extract various products.

Player #5054749
mj, Petroleum is a refined product, so not naturally occurring. It is the crude oil that occurs naturally.

mj
I don't know him