Which of the following is the correct drain size for a non-handicap shower?

The correct drain size for a non-handicap shower is 2 inches. This size is standard because it allows for adequate water flow and drainage, which is essential in preventing clogs and overflow in a shower setup. A larger drain size helps accommodate the volume of water typically used in a shower and ensures efficient drainage, minimizing the risk of pooling water or backup. While smaller drain sizes could potentially lead to slower draining rates or increased likelihood of clogs, the 2-inch diameter provides a balance between sufficient capacity and compliance with plumbing codes, making it the appropriate choice for non-handicap showers.