REXX program can be executed only from TSO READY prompt?
B
Correct answer
Explanation
REXX programs can be executed from multiple mainframe environments, not just TSO READY. They can run from ISPF (Interactive System Productivity Facility), as batch jobs (submitted to MVS), from Unix System Services, and even within certain applications. The TSO READY prompt is just one execution environment among many. The statement that REXX can ONLY be executed from TSO READY is false.