**Core Concept**
Oxalate stones form due to an excess of oxalate ions in the urine, which can be caused by various factors including dietary intake, gastrointestinal disorders, and genetic conditions. The kidneys attempt to excrete excess oxalate, but in certain situations, it precipitates out of solution and forms kidney stones.

**Why the Correct Answer is Right**
Oxalate stones are most commonly found in patients with primary hyperoxaluria, a rare genetic disorder characterized by a deficiency of the enzyme alanine-glyoxylate aminotransferase (AGT). This enzyme is responsible for converting glyoxylate to glycine, thereby preventing the formation of oxalate. In the absence of AGT, glyoxylate is converted to oxalate, leading to an excessive accumulation of oxalate in the urine. Other factors that contribute to the formation of oxalate stones include a high intake of oxalate-rich foods, such as spinach and beets, and certain gastrointestinal disorders, such as Crohn's disease.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because oxalate stones are not typically associated with hyperparathyroidism, which is more commonly linked to calcium phosphate stones.
**Option B:** This option is incorrect because hyperoxaluria is not a characteristic of cystinuria, a genetic disorder that affects the transport of cystine and other amino acids in the kidneys.
**Option C:** This option is incorrect because oxalate stones are not typically associated with distal renal tubular acidosis (dRTA), which is more commonly linked to the formation of calcium phosphate stones.

**Clinical Pearl / High-Yield Fact**
Patients with primary hyperoxaluria often present with recurrent kidney stones, and may also experience symptoms such as kidney failure, nephrocalcinosis, and osteodystrophy.

**Correct Answer: D**