Answer: Hi im Sergeant von im here to help you in any way ma'm;)
I would think it would be the last one ( A SCANNER ) i hope this maybe the right answer if not im sorry at least i gave it a shot
Explanation:
The last one " a scanner " is the one i would choose ma'm it seems logic the the Question and seems too fit in with the rest ;)
Have a good day ma'm
A computer uses unallocated space also know as free space to keep a file that has been deleted in its disk until a new file takes it spot and overwrites it.
Answer:
thermometer , petrol pump
Answer: 7 math 8 many
Explanation: it makes sense