Scheduler are activated using ---------------------------Select one:a. user threadb.  lightweight process (LWP)c. kernel thread

Schedulers are activated using c. kernel thread.

Here's a step-by-step explanation:

1. A scheduler is a component of the operating system that handles the execution of multiple processes in the system.

2. The scheduler decides which process should run at a given time, based on a certain algorithm. This is crucial in multitasking operating systems to ensure efficient use of system resources.

3. The scheduler operates at the kernel level of the operating system. The kernel is the core part of the operating system that interacts directly with the hardware of the system.

4. Therefore, the scheduler is activated using a kernel thread, not a user thread or a lightweight process (LWP). Kernel threads have the ability to access system data and hardware directly, which is necessary for the scheduler to function properly.