In humans, water is :

Options

A. found in the glomerular filtrate
B. reabsorbed from the nephron
C. in the urine
D. all of the above

Answer

To solve the question "In humans, water is:", we need to analyze the options provided and determine where water is found in the human body.

### Step-by-Step Solution:

1. **Understanding Glomerular Filtrate**:
- The glomerular filtrate is formed in the kidneys when blood is filtered through the glomeruli.
- This filtrate contains water along with other substances like salts, nutrients, and nitrogenous wastes.
- Therefore, water is present in glomerular filtrate.

2. **Reabsorption from Nephron**:
- The nephron is the functional unit of the kidney, and it plays a crucial role in the reabsorption of water.
- As the filtrate passes through the nephron, a significant amount of water is reabsorbed back into the bloodstream.
- This reabsorption process helps maintain the body's fluid balance. Thus, water is indeed reabsorbed from the nephron.

3. **Presence in Urine**:
- Urine is the final product of the filtration and reabsorption processes in the kidneys.
- It consists mainly of water, along with waste products and excess substances that the body needs to eliminate.
- Therefore, water is also present in urine.

4. **Conclusion**:
- Since water is found in glomerular filtrate, is reabsorbed from the nephron, and is present in urine, we can conclude that water is found in all of the above options.
- Thus, the correct answer is **D) All of the above**.

### Final Answer:
In humans, water is found in glomerular filtrate, reabsorbed from nephron, and present in urine. Therefore, the correct answer is **D) All of the above**.