The correct answer is B. Linseed oil.
Linseed oil is a vegetable oil derived from the flax plant. It is a drying oil, meaning that it will harden over time when exposed to air. This makes it ideal for use in oil paints, which need to dry slowly and evenly in order to achieve a smooth finish.
Olive oil is another vegetable oil, but it is not a drying oil. This means that it will not harden over time, and it is not suitable for use in oil paints.
Kerosene oil is a petroleum product, and it is not suitable for use in oil paints. It is a flammable liquid, and it can damage the paint and the canvas.
Acetate of lead is a chemical compound, and it is not suitable for use in oil paints. It is a toxic substance, and it can damage the paint and the canvas.
In addition to linseed oil, other drying oils that are sometimes used in oil paints include walnut oil, poppyseed oil, and safflower oil. These oils all have different properties, and they can be used to achieve different effects in oil paints.