Viscous force is similar to friction in solids, but viscous force

a)is independent of area but friction depends on area

b)is temperature dependent while frictional force between solids depends upon normal reaction.

c)is velocity dependent while friction is not.

d)is velocity independent while friction is velocity dependent.

Viscous forces, like other frictional forces, oppose the relative motion of nearby fluid layers. While viscous forces rise with velocity, solid frictional forces are roughly velocity independent.

Body mass, temperature, velocity, and density all affect viscosity. As opposed to friction, which merely depends on normal reaction.

Hence the correct answer is b, c are correct.