On a conventional road where no droving road (vía pecuaria) exists, where must a flock or herd travel?

A)Along either the right or left hard shoulder, indistinctly.
B)Along the passable part of the left-hand hard shoulder.
C)Along the right-hand hard shoulder.Correct
Draft, pack or riding animals, or livestock moving freely, shall travel along the right-hand hard shoulder and, if they must use the carriageway, shall do so keeping as close as possible to the right-hand edge. As an exception, driving a single animal on the left-hand side is permitted if it is more advisable for safety reasons.