The petroleum industry in Nigeria is?

  • A the sole source of the nation's revenue
  • B the oldest industry in the country
  • C the mainstay of the economy
  • D a factor in the decline in the nation's foreign reserves

The correct answer is C. the mainstay of the economy

The petroleum industry in Nigeria is the largest on the African continent. As of 2014, Nigeria's petroleum industry contributes about 14% to its economy. It is one of the pillars of the nation's economy.

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