Which of the following is used to connect a 1/2 inch drain to the bottom of a 3/4 inch tee?

The correct connection to attach a 1/2 inch drain to the bottom of a 3/4 inch tee is a 3/4" X 1/2" reducing fitting, also known as a reducing elbow (RE). This type of fitting allows for a secure and flow-efficient transition between the larger pipe size of the tee and the smaller drain size.

When connecting pipes in plumbing, it is crucial to match the fittings to the size of the pipes involved. The 3/4" connection ensures a snug fit with the tee, which has a 3/4 inch opening, while the 1/2" side connects to the drain, maintaining the appropriate size for drainage purposes. This setup is essential to prevent leaks and ensure proper flow in the system.

Other options do not provide the correct size match needed for this specific connection. A 1/2" X 1/2" fitting does not accommodate the larger tee size, while a 3/4" X 3/4" fitting does not provide the necessary reduction for the drain connection. The 1" X 1/2" fitting is also not suitable, as it does not connect properly to the tee size and does not match the drain