The correct option is
B Petroleum
Petroleum is dark coloured thick crude oil and is also called fossil fuel. It is known as mineral oil as it is procured during refining and extraction of crude oil.
A. Mustard oil is obtained from the seeds of the black and white mustard plant. These oils are edible vegetable oils.
B. Petroleum is mineral oil.
C. LPG is prepared by oil refining or during natural gas processing.
D. Palm oil is obtained from palm fruit.
Hence, the correct answer is 'Petroleum'