Is it allowed to drive on an expressway below the minimum speed limit established for that road without justified cause?
A)Yes, although it is mandatory to drive on the shoulder.
B)Only if it does not hinder the normal traffic of other vehicles.
C)No, because it is an abnormally reduced speed.Correct
# Explanation
Driving on an expressway below the minimum speed limit without justification is **prohibited** because it constitutes an abnormally reduced speed. This restriction exists to maintain traffic flow and avoid dangerous situations, since very low speeds on highways can cause congestion and accidents. It is only allowed to reduce speed below the minimum if there is a justified cause (bad weather, breakdown, etc.).