Final answer:
CLIST or REXX are scripting languages that can be executed line-by-line without prior compilation, unlike Assembler, COBOL, and PL/1 which require compilation.
Step-by-step explanation:
Among the given options, CLIST or REXX can be executed as a single command from a list of commands without compiling it. Both CLIST (Command List) and REXX (Restructured Extended Executor) are scripting languages used on IBM mainframe systems, which can be interpreted and executed line-by-line by a command processor. This is different from languages like Assembler, COBOL, and PL/1 that generally need to be compiled into object code before being executed.