Physiology Which of the following inhibits both gastric acid secretion and motility? A Vasoactive intestinal polypeptide (VIP) B Gastric inhibitory peptide (GIP) C Somatostatin D Ghrelin 💡 Explanation Which of the following inhibits both gastric acid secretion and motility? ✓ Correct Answer: B. Gastric inhibitory peptide (GIP)