Why Does the Overall Mass and Energy Density of the Universe

Multiple Choice

Why does the overall mass and energy density of the universe decide its ultimate fate?

A) The greater the density of the universe, the more black holes will form, which will devour surrounding material more quickly.
B) The greater the density of the universe, the more gravitationally bound the universe will be.
C) The greater the density of the universe, the more massive stars it will contain, and the faster it will evolve.
D) The greater the density of the universe, the more stars it will form over time and the longer the universe will last.
E) The greater the density of the universe, the more supernova will explode, forcing the universe to expand forever.