B. Lighthouses can make great museums and landmarks
Explanation:
Museums are sometimes buildings or institutions dedicated for exhibition of some objects to have historical value. Lighthouses from the passage make great museums in the sense that if one visits a coastal city or an inland city that has access to a major waterway, there is high chance of seeing lighthouse.
Landmarks are man-made notable towers with historical purpose. From the passage, Lighthouses can make great landmarks because it’s easy to find functional lighthouse today because of it is in a notable location. Therefore lighthouse from the passage creates museum and historical landmarks in maritime culture.
It could possible be ironic because the rest of the world was technically already "discovered", but just not by the Europeans specifically. Therefore it is ironic, simply because they are Naive
