Which substance is categorized as polyethylene glycol 3350 for bowel movement facilitation?

Polyethylene glycol 3350 is a laxative commonly used to relieve constipation by increasing the water content in the stool, thereby facilitating bowel movements. The correct answer is Miralax, which is the brand name for this substance. Miralax works by drawing water into the intestines, which softens the stool and stimulates a bowel movement, making it an effective treatment for occasional constipation.

Other options represent different medications that serve various purposes not related to bowel regulation. Fosamax is used primarily for treating osteoporosis, Dulcolax is a stimulant laxative that works differently from polyethylene glycol, and Evista is primarily used for osteoporosis prevention and treatment as well with additional effects on breast cancer. Understanding the specific function of polyethylene glycol 3350 helps clarify why Miralax is the appropriate choice in this context.