In a study, participants memorize a map of an island with a beach on the west side and a volcano on the east side. They are then asked to imagine the map. When instructed to mentally 'scan' from the beach to the volcano, it takes them significantly longer than when asked to scan from the beach to a nearby pier. This time difference, which corresponds to the distances on the original map, provides the strongest evidence that the mental image is...

Which of the following cognitive tasks provides the clearest evidence for the use of a mental representation that functions like a picture, preserving spatial relationships?