What Features Dominate the Surface of Ganymede, One of Jupiter's

Multiple Choice

What features dominate the surface of Ganymede, one of Jupiter's satellites?

A) craters, densely spread over the entire surface
B) volcanoes, lava lakes, and sulfur dioxide frost
C) many cracks and streaks and very few craters in an otherwise smooth, icy surface
D) old, dark, highly cratered polygons separated by younger, lighter, grooved terrain