What is the mandatory minimum lateral distance that must be maintained when overtaking a cyclist or a moped outside built-up areas?

Why this is the correct answer

Outside built-up areas (vías fuera de poblado), the law mandates a lateral distance of at least 1.5 metres when overtaking a cyclist or moped to ensure safety. Inside cities (vías urbanas), while the 1.5-metre rule is not strictly codified as a fixed minimum, drivers must always maintain a sufficient and proportional safety distance that allows for the safe passage of the cyclist, considering the speed and characteristics of the road.