ANS:A - petroleum

The most commonly used solvent in oil paints is.

Linseed oil is a common solvent used in oil paints. It is derived from flax seeds and is known for its slow drying time, which can be beneficial for artists who want to have more time to work with their paint. Other solvents that are commonly used in oil paints include turpentine, mineral spirits, and white spirit. The choice of solvent can depend on the desired drying time, the type of paint being used, and the preferences of the artist. Oil paint is a type of slow-drying paint that consists of particles of pigment suspended in a drying oil, commonly linseed oil. The viscosity of the paint may be modified by the addition of a solvent such as turpentine or white spirit, and varnish may be added to increase the glossiness of the dried oil paint film. Turpentine is the traditional solvent used in oil painting. It's based on tree resin and has a fast evaporation rate. Accordingly, it is Turpentine commonly used. But in some cases, it is where the dry condition is not satisfactory then we used Petrol.