Final answer:
Option (a), The specific gravity of urine is greater than that of distilled water due to the presence of dissolved solutes, making the statement true.
Step-by-step explanation:
The specific gravity of urine is indeed slightly greater than the specific gravity of distilled water. This is because urine contains dissolved solutes which increase its density compared to pure water, which has a specific gravity of 1.0. The specific gravity of urine ranges between 1.005 and 1.030, indicating the presence of these solutes.
Certain conditions such as dehydration can lead to higher specific gravity, while others like renal failure can result in lower specific gravity.