Okay, let's tackle this question about renal changes in preeclampsia. First, I need to recall what preeclampsia is. It's a condition during pregnancy characterized by high blood pressure and signs of organ damage, usually after 20 weeks. The question is asking for a true statement regarding renal changes. So, the core concept here is understanding the renal pathology in preeclampsia.

Preeclampsia is known to cause endothelial dysfunction, leading to vasospasm and reduced blood flow to the kidneys. This can result in acute tubular necrosis? Wait, no, maybe that's from something else. Or maybe glomerular damage. Let me think. In preeclampsia, there's often a decrease in glomerular filtration rate (GFR), which leads to proteinuria. The kidneys may show changes like glomerular endotheliosis, where the endothelial cells are swollen and the lumens are narrowed. That's a classic finding in preeclamptic nephropathy.

So the correct answer would likely mention endotheliosis or decreased GFR. Now, looking at the options, even though they aren't provided, I can imagine common distractors. For example, options might include things like "increased GFR," "glomerulonephritis," "interstitial nephritis," or "tubular atrophy." Each of these would be incorrect.

The clinical pearl here is that in preeclampsia, the renal changes are primarily due to endothelial swelling and glomerular damage, leading to reduced GFR and proteinuria. The key is to differentiate this from other causes of renal issues. Also, resolving preeclampsia usually leads to recovery of kidney function, unless there's prolonged damage.

So putting it all together, the correct answer should state that preeclampsia causes glomerular endotheliosis and decreased GFR. The other options would be incorrect for various reasons, like being associated with other conditions or incorrect mechanisms. The explanation needs to highlight the endothelial dysfunction and the resulting glomerular changes specifically.

**Core Concept**
Preeclampsia induces endothelial dysfunction and vasospasm, leading to **glomerular endotheliosis** and reduced glomerular filtration rate (GFR). Proteinuria arises from glomerular basement membrane damage, not intrinsic nephritis.

**Why the Correct Answer is Right**
The hallmark renal change in preeclampsia is **endotheliosis**, where glomerular endothelial cells swell, narrowing capillary lumens and reducing GFR. This causes proteinuria due to increased glomerular permeability. Acute tubular necrosis or interstitial nephritis are not typical; recovery occurs post-delivery.

**Why Each Wrong Option is Incorrect**
**Option A:** *Increased GFR* is false; preeclampsia causes **decreased GFR** due to glomerular vasoconstriction.
**Option B:** *Interstitial nephritis* is incorrect; preeclampsia does not involve interstitial inflammation.
**Option C:** *Tubular atrophy* is seen in chronic kidney disease, not acute preeclamptic changes.

**Clinical Pearl / High-Yield Fact**
Remember: **"Preeclampsia = Proteinuria + Endotheliosis + Low G

✓ Correct Answer: B. Glomerulo endotheliosis