Answer:
A. It is a limited supply
Step-by-step explanation:
Petroleum is one of the fossil fuels that originates from dead and decaying organisms in basins of deposition. For petroleum to form, several geologic,biologic and chemical factors must be accurately in place. These factors takes a huge amount of time in geologic time scale to form. The petroleum in the crust today formed several millions of years ago.
With this knowledge, petroleum is a non-renewable resource. It was central to the industrial revolution and the modern world was built around the oil industry. Exploration and production of petroleum provides oil for industrial and domestic use. Formation of petroleum takes millions of years and so, it is not renewable in our life time. It would take several years for the oil being used today to be replenished provided all the factors are in play.
This makes oil a limited resource constantly being depleted and not easily replenished.
Organisations like OPEC(Organisation of Petroleum Exporting Countries) comes together to ration production and supply so as to keep oil consumption in check.