Answer
Volcanoes fed by highly viscous magma are more likely to cause greater threat to life and property than volcanoes that are fed with highly fluid magma.
Work Step by Step
Volcanoes fed with highly viscous magma expel highly explosive volcanic ash and gases called eruption columns. These are also able to travel to great distances away from the spot of explosion causing higher amounts of damage. Their tendency to explode is what makes them a greater threat to life and property.
