The total amount of entropy in the universe is constantly increasing because energy never flows in the opposite direction. So, option A is correct .
Entropy is a measure of a system's unpredictability or disorder, according to its definition.
Entropy rises as a result of the constant downward flow of energy. Energy spreads as widely as it can, and entropy is the dispersion of energy. It moves independently from a hot (highly energetic) location to a chilly (lowly energetic).
As a result, energy is distributed equally across the two locations, and temperatures are the same in both. The identical procedure takes place on a much larger scale. Energy is released into the universe by all stars, including the Sun.
There won't be any warmer or cooler objects because the heat will have dispersed to the point where the stars eventually cool down. It will continue to be the extremely cold.
The overall entropy of the system rises. The total amount of entropy in the universe is constantly rising because energy never flows in the opposite direction.
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