Question

specific gravity indicatès:
a the amount of blood in the urine.
b the amount of water in the urine.
c the amount of dissolved substances in the urine.
d the amount of acid in the urine.

Explanation:

Specific gravity is a measure that compares the density of a substance (in this case, urine) to the density of water. It reflects the amount of dissolved substances (such as salts, urea, etc.) in the urine. The more dissolved substances, the higher the specific gravity. Blood in urine (hematuria) is detected by other methods like microscopy or chemical tests for blood components. The amount of water in urine affects specific gravity indirectly (more water - lower specific gravity, less water - higher specific gravity), but specific gravity is a measure of the solute - to - solvent (water) ratio, not just water amount. The amount of acid in urine is measured by pH (for acidity/alkalinity), not specific gravity.

Answer:

C. the amount of dissolved substances in the urine.