Concept:The illustrated item is a tool used in farm surveying to mark straight lines or reference points.Explanation:The diagram shows a long, straight pole with a pointed metal tip.Such poles are usually painted in alternating bright colours to improve visibility in the field.Surveyors push the pointed end into the ground to mark stations or align survey lines.This description matches a ranging pole, not an arrow, harpoon, or wooden peg.Answer:D. ranging pole
