The client is prescribed a stool softener. Which statement best describes the scientific rationale for administering this medication?  1. The medication acts by lubricating the stool and the colon...

The client is prescribed a stool softener. Which statement best describes the scientific rationale for administering this medication?

 1. The medication acts by lubricating the stool and the colon mucosa. 2. Stool softeners irritate the bowel to increase peristalsis. 3. The medication causes more water and fat to be absorbed into the stool. 4. Stool softeners absorb water, which adds size to the fecal mass.