<prompt> The success of oral rehydration therapy of diarrhea depends upon which of the following processes in the intestinal mucosa?Sodium pump mediated Na absorptionGlucose coupled Na absorptionBicarbonate coupled Na absorptionPassive Na diffusion secondary to nutrient absorption  <response>: Glucose coupled Na absorption from GIT remain patent even in presence of severe diarrhea whereas other mechanisms may fail. Thus, glucose is added in the ORS. 