Which magma type would generally have the lowest viscosity? which magma type would generally have the lowest viscosity? andesite basalt dacite rhyolite?

Viscosity is defined as the resistance to flow. The viscosity of magma highly depends on the composition of the magma. It is said that the higher the silica content, the higher the viscosity. The lower the silica content, the lower the viscosity. 

Among the three, basalt has the lowest silica content and that would mean that its' viscosity is the lowest among the given.