[Answer] 3. Which of these is an early sign of renal failure?

Step 1 : Introduction to the question "3. Which of these is an early sign of renal failure?"

...1. itching 2. high blood pressure 3. swollen ankles 4. all of these Although there are signs and symptoms of early renal failure, more often than not it remains undetected until a medical check up. So the advice is: see your doctor regularly.

Step 2 : Answer to the question "3. Which of these is an early sign of renal failure?"

all of these:

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