Plumbing Mastery Challenge: Can You Diagnose, Fix, and Prevent Common Issues?4. If a toilet tank keeps running water, what is the MOST likely cause?13%Next Correct Incorrect A worn flapper valve fails to seal, causing continuous water flow. 4. If a toilet tank keeps running water, what is the MOST likely cause? Broken toilet seat Clogged drain pipe Low water pressure Faulty flapper valve 13%
