Which liquid has the highest viscosity? water acetone oil salt water

Answer is: oil has the highest viscosity.
The viscosity of a fluid is a measure of its resistance to gradual deformation by tensile stress and shear stress.
The dynamic viscosity of water is 0,890 cP (centipoise) at about 25 °C.
The dynamic viscosity of acetone is 0,306 cP at about 25 °C.
The dynamic viscosity of olive oil for example is 81 cP at about 25 °C.

If the water vapor content stays the same and the temperature drops, then the relative humidity increases. its vise versa.if the water vapor content stats the same and the temperature rises, the relative humidity decreases. so, yes, i'd say that temperature and humidity have a strong relationship.