Which of the following would result in the production of hypotonic urine?

The decrease in antidiuretic hormone (ADH) leads to the production of dilute, hypotonic urine. ADH plays a key role in regulating water reabsorption in the kidneys. 

When ADH is present, it promotes the reabsorption of water from the filtrate back into the bloodstream, concentrating the urine. This is especially important when the body needs to conserve water due to dehydration or other factors.

However, when ADH is absent or not functioning properly (a condition known as diabetes insipidus), the kidneys do not reabsorb as much water, and the resulting urine is more dilute and hypotonic. This can lead to increased urine output and a risk of dehydration if not properly managed.

So, the absence of ADH leads to the production of hypotonic (dilute) urine.