In JCL, the COND parameter specifies a condition that, if true, causes the step to be bypassed (not executed). This allows conditional execution based on return codes from previous steps. Option B (abend) would mean abnormal termination, not skipping. Option C (execute) is the opposite of what COND does. S0C7 (option D) is a specific system abend code for data exception, unrelated to COND logic.