Which of the following is NOT a possible reason for why a region is higher in elevation than adjacent regions?

A) the lithosphere is hotter
B) it has continental crust, but adjacent regions have oceanic crust
C) the crust is thicker
D) the crust is more dense

Regions that are higher in elevation are typically not characterized by having denser crust. Instead, denser crust would tend to sink lower due to isostasy, making the region lower in elevation compared to its surroundings. Options A, B, and C can all contribute to higher elevations through thermal expansion, differences in crustal type, and increased crustal thickness, respectively.