Answer: Batch
Step-by-step explanation:
Batch processing refers to the method whereby high-volume, and repetitive data jobs are being run. The batch method enables the users to be able to process data when there's availability of computing resources and there's minimal user interaction.
From the question, since the system falls in the area of low volume and low standardization, but isn't at the extreme left (lowest) point, then the batch processing is recommended.