stability is the ability of not being prone little or big changes in the surroundings that you find yourself in a nutshell stability is the ability of being stable or maintaining a balance.
Maintaining a narrow base makes it less likely for an object or person to be stable because standing a base that is narrower in relation to the base of the object placed on it makes the object to be prone to little distortions like wind and other external force which might not be great enough to move the object if it was on a wider base.
