Is it true that a wet surface decreases friction?

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True

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answer is A.

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Detailed Solution

The above statement is true.
A wet surface decreases the friction between the two surfaces in contact.
The force that opposes motion between any surfaces in contact is known as friction. Rough surfaces have more friction than smooth surfaces, and liquids such as oil or water are sometimes used as lubricants to reduce the effect of friction. There is no mystery behind friction. It acts on objects on the surfaces to prevent or reduce movement between the surfaces.
Water can decrease the friction between two surfaces in contact. For example, water reduces the friction between road pavements and rubber tires. That's why drivers must be extra careful not to skid when roads are wet. The frictional force between two bodies majorly depends on three factors: (i) the adhesion between body surfaces, (ii) the roughness of the surface (iii) the deformation of bodies.

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