To answer this question, you need to understand how the execution priority of a job can be modified. Let's go through each option to understand why it is correct or incorrect:
Option A) PRIQTY parameter - This option is incorrect because the PRIQTY parameter is not used to modify the execution priority of a job. The PRIQTY parameter is used to specify the priority of a printer or device.
Option B) PRTY parameter - This option is correct because the PRTY parameter is used to modify the execution priority of a job. By specifying a higher priority value, the job will be given higher priority for execution.
Option C) JOBCLASS parameter - This option is incorrect because the JOBCLASS parameter is used to specify the job class of a job, which helps in determining the scheduling priority of the job. It does not directly modify the execution priority of the job.
Option D) RUNTIME parameter - This option is incorrect because the RUNTIME parameter is used to specify the maximum amount of CPU time that a job can use. It does not modify the execution priority of the job.
The correct answer is Option B) PRTY parameter. This option is correct because the PRTY parameter is used to modify the execution priority of a job. By specifying a higher priority value, the job will be given higher priority for execution.