A patient presents with normal anion gap metabolic acidosis, hypokalemia, and alkaline urine. Which of the following renal tubular defects is most consistent with these findings?

✓ Correct Answer: Option A

Type 1 RTA involves impaired H+ secretion in the distal tubule, leading to metabolic acidosis, alkaline urine (due to inability to acidify), and hypokalemia (due to increased K+ excretion).