Urine volume of less than 100 ml./day is:Group of answer choicesOliguriaPolyuriaPolydipsia Anuria

To determine the correct answer, let's analyze the options based on their definitions:

1. Oliguria: This condition is characterized by the production of a urine volume of less than 400 ml per day. In the context of this question, the urine volume of less than 100 ml/day suggests a more severe limitation of urine production.

2. Polyuria: This refers to the production of an abnormally large volume of urine, typically more than 2.5 to 3 liters per day. Therefore, this definition does not apply to the situation presented.

3. Polydipsia: This term refers to excessive thirst or increased intake of fluids. While it can be associated with certain medical conditions, it does not directly relate to urine volume.

4. Anuria: This condition is defined as the production of less than 100 ml of urine per day. It signifies a severe reduction in urine output and is often a sign of serious underlying health issues.

Final Answer

The correct answer is Anuria.