Answer
Dynamic equilibrium means that there is a certain set point that is defined as normal for the body and internal conditions fluctuate around this set point in a suitable range.
Homeostasis does not prevent internal change. Instead, homeostasis promotes actions to keep internal conditions within a suitable range.
Work Step by Step
Dynamic equilibrium means that there is a set point and range within the body that is defined as normal. External and internal conditions cause fluctuations around that set point. When conditions force the values outside the normal range, homeostasis kicks in to promote actions to set the value back within normal range. In that way, homeostasis doesn't prevent internal change, it promotes change. It just promotes change back to the normal set point.
