Answer:
a student who researches various websites that show how to gamble online
a student who visits a special website with step-by-step directions on how to make a bomb
a student who posts jokes online about the cultural heritage of other students
Explanation: These are all most likely against school policy. In fact attempting to make a bomb is illegal.
Disk Defragmenter
A disk defragmenter is a utility that reorganizes the files and unused space on a computer's hard disk so that the operating system accesses data more quickly and programs run faster.
Manage the computer's resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software.