Which law states that the entropy of the universe is always increasing? a. first law of thermodynamics b. second law of thermodynamics c. third law of thermodynamics d. first law of entropy

Second law of thermodynamics states entropy of the universe is always increasing. entropy always increases in a spontaneous process .

option B) second law of thermodynamics

for example if we keep a hot cup of coffee the heat is lost to surrounding and entropy( randomness increases) since it is a natural process entropy of universe increases.