Which statement best defines stability?

• A. Being unlikely to change
• B. Balance
• C. A numerical fact
• D. A field of study

Answer: (A)

Stability is about remaining the same over time; a stable thing resists change and stays in its current state unless something actively moves it. This makes the statement about being unlikely to change the best fit, since it directly expresses constancy and resistance to disruption. Balance describes an even distribution or equilibrium at a moment, but something can be balanced and still easily tipped by a small disturbance, so it isn’t the defining feature of stability. A numerical fact is just data, not a description of how likely something is to change, and a field of study is simply a subject area, not a property of a system’s behavior. So, being unlikely to change captures stability most accurately.