A. natural gas, oil, groundwater
B. ground water, oil, natural gas
C. oil, groundwater, natural gas
D. oil, natural gas, ground water
✅ The correct answer is option A.
In an oil trap formed by an anticline, natural gas accumulates on top, oil in the middle, and groundwater at the bottom.
In an oil trap formed by an anticline, natural gas accumulates on top, oil in the middle, and groundwater at the bottom.