As a general rule, on a two-way interurban road, stopping off the roadway is allowed,...

A)on the left side and leaving the passable part of the shoulder free.
B)on the right side and on the passable part of the shoulder.
C)on the right side and leaving the passable part of the shoulder free.Correct
# Explanation
On two-way interurban roads, stopping off the roadway is allowed **always on the right side**, following the general rule of driving on the right. In addition, it is mandatory to leave **the passable part of the shoulder free** so that other vehicles can travel if necessary, ensuring road safety and not obstructing passage.