Final answer:
Hydrostatic equilibrium in our Sun is a balance between gravitational forces and pressure.
Step-by-step explanation:
The balance of hydrostatic equilibrium in our Sun is between gravitational forces and pressure.
The mutual gravitational attraction between the masses of various regions within the Sun produces tremendous forces that tend to collapse the Sun toward its center. However, the gravitational forces are counterbalanced by the pressure of gases within the Sun, which prevents it from collapsing due to gravity. The pressure of the gases is maintained by the high temperature at the center of the Sun.