If You Pass This Quiz You Were Meant To Be A PlumberThe most common cause of slow drainage in a household bathroom floor drain is?15%Next Correct Incorrect Hair and debris easily accumulate in the floor drain, causing blockage The most common cause of slow drainage in a household bathroom floor drain is? Accumulation of hair in the floor drain P-trap Collapse of the main drainage pipe Malfunction of the water heater Leakage of the toilet tank 15%
