Correct option is D
The
vehicle ingredients in an oil paint, typically a drying oil such as linseed oil, serve as a medium to hold the pigment and other components of the paint in liquid suspension. This ensures a smooth application and proper adhesion to the surface.
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Option (A): Making the paint thin is primarily the function of a thinner or solvent.
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Option (B): Accelerating the drying process is the role of a drier, not the vehicle.
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Option (C): Forming the bulk of the paint is the role of pigments or fillers.
