Which of the following best characterizes the structure of diamond?
a. a thin sheet
b. a cubic lattice
c. a round shape
d. a crystalline matrix

Because of the hard structure of diamonds that basically are a comprised of carbon atoms linked closely together in a lattice structure, then the right answer should be b. a cubic lattice

They did not study the continental drift

That result from subduction of oceanic plates beneath lighter continental plates. most of the earth's volcanoes are located around the pacific ring of fire because that the location of most of the earth's subduction zones.