In which segment of the nephron does the conditional reabsorption of $Na^+$ and water occur?

Reabsorption of substances according to the needs of the body is called:

What is the "renal threshold"?

The loop of Henle is located in the $.......$.

$A$ large quantity of fluid is filtered every day by the nephrons in the kidneys. Only about $1\%$ of it is excreted as urine. The remaining $99\%$ of the filtrate

Choose the mismatched part of the nephron with its function.