Entropy tends to increase over time in an isolated system, and reducing entropy is not always feasible; natural processes lack complete reversibility.
Entropy is a measure of the disorder or randomness in a system and tends to increase over time in an isolated system, reflecting the Second Law of Thermodynamics.
In contrast to the statement in option (c), it is not always possible to reduce the entropy of a system; entropy typically increases unless energy is expended to lower it in local areas at the expense of increasing it elsewhere.
Therefore, option (e) is the correct statement, as the nature of entropy and energy conversions do not allow for complete reversibility in natural processes.
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