Which of the following changes occurs with the greatest increase in entropy?

You did not write down the Choices but I can tell you how to.

Entropy has to do with chaos, disorder. Most reaction lean toward a state where there is more disorganization, and the more chaos there is, the more positive the entropy is.

Examples:

When solids does to liquid state, or liquid to gases. This should make sense because in the solid state, the atoms are arranged close to each other (organized). By going to liquid or gas state, these atoms separate more and spread out in a not organic pattern.

Also when the number of gas moles increases is another way to show the I crease in entropy.