Which method is used to separate a mixture of kerosene and petrol?

The correct option is A Distillation
Kerosene and petrol are miscible liquids. A mixture of two miscible liquids having a difference in their boiling points, more than ${25}^{\circ }C$ can be separated by the method of distillation.

The difference in boiling point of kerosene and petrol is more than ${25}^{\circ }C$. So, kerosene and petrol can be separated by distillation.