Final answer:
A system is more stable when it is in a state of low entropy, which means it has less disorder. High entropy represents high disorder, while low entropy represents an orderly system. Input of energy is needed to achieve low entropy and hence a more stable system. The correct option is B.
Step-by-step explanation:
To understand which condition makes a system more stable, we must consider the concept of entropy, which is a measure of the level of disorder in a system. High entropy corresponds to a higher state of disorder, while low entropy indicates a more ordered system.
Generally, systems tend toward higher entropy, which means an increase in disorder. However, a system is considered more stable when it is in a state of low entropy, signifying less disorder. In thermodynamics, processes that increase entropy are spontaneous; melting ice increasing entropy is one such example, as the solid structure (organized) becomes a more disordered liquid.
To achieve low entropy, energy must be input into the system to create order, such as actively organizing a room or maintaining a car to prevent it from rusting and degrading.