Concept:Track the path step-by-step using directions and distances, then find the direction from the final point to the starting point.Explanation:Let the house be at the origin.First move: 50 m South → coordinates (0,−50).Second move: turns left (from South, left is East) → 20 m East → coordinates (20,−50).Third move: turns to the North → 30 m North → coordinates (20,−20).Now she walks to her house (0,0).The displacement from (20,−20) to (0,0) is (−20,20), i.e., 20 m West and 20 m North.Thus she is walking in the North-West direction.Answer:North-west