Explanation:
Real-time processing:
In simple, Real-time processing means, as and when the data comes, it will processed and the output will be sent immediately.
Example: ATMs, traffic system on road, etc.
Batch processing:
Rather in Batch processing, more number of inputs or "bulk inputs" will enter the system and there will be time for processing. The output will be sent later.
Option A: the term "several student payment" says that it is batch
Option B: Forecasting future student enrollment: The output can be given later. Hence it is batch processing.
Option C: Immediate change implies that it is real-time processing
Option D: The word "several personnel accessing" implies that it is batch processing.