Concept:Resource management in a computer is handled by the system software that controls all hardware and software.
Explanation:The operating system is the core software that manages computing resources such as memory, processing time, storage, and input/output devices.
It performs resource allocation by assigning available resources to running programs and processes.
It performs de-allocation by reclaiming resources when a process finishes or no longer needs them.
This ensures that multiple applications can run smoothly without conflicts or memory leaks.
Browsers are application programs that use resources but do not manage them.
Application software also depends on the operating system for resource access.
The memory unit is a hardware component, not a manager of resources.
Therefore, the responsibility of allocating and de-allocating computing resources belongs to the operating system.
Answer:B. operating system