Identify the statement, which best describes the second law of thermodynamics :

[A] The internal energy of the universe is constant.

[B] Energy can be neither created nor destroyed.

[C] At absolute zero, entropy of a substance is considered to be zero.

[D] When an isolated system undergoes a spontaneous change, the entropy of the universe increases.

Answer & Explanation
Answer: When an isolated system undergoes a spontaneous change, the entropy of the universe increases.

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