C. Mantle would be correct
Answer:controlling a situation by making things happen or by preparing for possible future problems
Explanation:
Answer:
Disadvantages of Batch Operating System:
- The computer operators should be well known with batch systems.
- Batch systems are hard to debug.
- It is sometime costly.
- The other jobs will have to wait for an unknown time if any job fails.
Numeric Keypad is the answer