Correct option is C
→ Varnish = Resin(Base & pigment) material + linseed(vehicle) oil + turpentine(thinner) oil + Alcohol(Extender/filler)
→ The objective of varnishing a surface are :-
To protect the painted surface from atmospheric action
it brings the appearance of grains in wood.
it renders brilliancy to the painted surface.
it protect the unpainted Surface of doors & windows from the atmospheric agencies like air, water, temprature
