How is the minimum horizontal distance of the UAV from people defined?

Question

Question EASA Drone Quiz - Flight performance and planning

QuizVDS · Accepted Answer

Can be caused by natural obstacles

QuizVDS · Answer

Can be caused by artificial obstacles

QuizVDS · Answer

Can be caused by artificial or natural obstacles

QuizVDS · Answer

Can be caused by obstacles at least 120 meters high

Id 262 - EASA Drone Quiz – Drone Pilot Certification - How is the minimum horizontal distance of the UAV from people defined?