What may ships detect first when making landfall on a coastline with higher inland mountains?

• A. The higher inland mountains
• B. The coastal shoreline
• C. The base of inland hills
• D. The horizon

Answer: (A)

When a ship is approaching land, what you first see is determined by line-of-sight over the curved Earth. Tall landforms stand out because they rise far above the sea level, so their summits become visible long before the low shoreline does. Even if the coast itself is still hidden by curvature or haze, the highest inland mountains can peek above the horizon and give you the first sign that land is near. The base of inland hills and the coastline are lower features, so they won’t appear until you get closer or the view clears enough; the horizon is simply the farthest line you can see along the sea and isn’t a land feature you’d identify first. The key idea is that height matters: taller inland mountains appear earlier on the skyline, signaling land before the coast itself.