B is correct...
Please vote my answer brainliest. thanks!
Answer:
An operating system has three main functions: (1) 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.
Memory Management.
Processor Management.
Device Management.
File Management.
Security.
Control over system performance.
Job accounting.
Error detecting aids.
Answer:
Their brain is not yet fully developed and they sometimes make the wrong choices.
Explanation:
By the time the person becomes a teen, some of the brain is developed, but not all of it. Because of that, the teen would make the wrong choice still.
(Also by process of elimination.)
C would be your best choice.