Choice A reason: Limiting coffee reduces acid stimulation, but it’s not the primary GERD strategy. Elevating the bed prevents reflux via gravity, making this a secondary suggestion compared to positional therapy. Choice B reason: Elevating the bed head keeps acid in the stomach during sleep, reducing esophageal irritation. This evidence-based intervention is a key GERD management technique for symptom relief. Choice C reason: Large meals increase gastric pressure, exacerbating reflux in GERD. Smaller, frequent meals are advised instead, so this contradicts best practice, worsening the condition rather than helping. Choice D reason: Lying down after eating promotes acid reflux into the esophagus, worsening GERD. Upright positioning post-meal is preferred, making this an incorrect and harmful recommendation.