Final answer:
Correct option is B) .A metal or reinforced plastic device that encloses a section of PEX tubing for rigid 90° bends is a clamp.
Step-by-step explanation:
A metal or reinforced plastic device that encloses a section of PEX tubing and provides rigid 90° bends is referred to as a clamp support. When installing PEX tubing, it's important to ensure that the tubing is supported and maintained at the correct angles to prevent any kinks or damage that might impede the flow of water. Clamps are specifically designed to secure PEX pipes in place and facilitate neat, uniform turns at precise angles without stressing the tubing.
A metal or reinforced plastic device that encloses a section of PEX tubing and provides rigid 90° bends is referred to as a(n) elbow support. Elbows are commonly used in plumbing systems to change the direction of the PEX tubing without compromising the flow of water. They come in various materials such as metal or reinforced plastic, and they provide a secure and rigid connection.