After reviewing the 24-hour urine collection reports of a client with kidney dysfunction, the nurse suspects diabetes mellitus. which finding supports this suspicion?

The finding could be glucosuria or polyuria

Patient with diabetes mellitus will have reduced amount or sensitivity to insulin. Reduced insulin cause elevated blood glucose level. Blood will continually be filtered by the kidney. While glucose is filtered too, it will be removed by the kidney cells up to a certain point. In diabetes, the glucose level is too high that there is some glucose left in the urine, lead to glucosuria. 
Glucose will attract the water, makes the urine is hard to concentrate and have a higher volume than normal, leading to polyuria.

C. gemstones they are the only non metallic mineral from the list.