A high level of in your urine could show that you have diabetes.

ketones.

Explanation:

If you have a high level of ketones in your urine, it usually means you're not getting enough insulin, which is a sign of Diabetes.

(I got this Information from the "Ketones in Urine" article from MedlinePlus.)

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.