An electron in an atom moves from the ground state to an excited state when the energy of the electron
(1) decreases
(2) increases
(3) remains the same

The answer is (2) increases. The definition of excited state is that the electrons have higher energy than ground state. For comprehension, the excited state is ready for reaction so it has higher energy.

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.

The correct answer is d