Multiple choice technology mainframe REXX means Restructure EXtended eXecutor language Restructured EXtending eXecutor language Restructured EXtended eXecutor language Restructured EXtended eXecution language Reveal answer Fill a bubble to check yourself C Correct answer Explanation REXX (Restructured EXtended eXecutor) is a programming language developed by IBM. The official expansion emphasizes its restructured design and extended execution capabilities. It's commonly used on mainframe systems for scripting and automation.