A systems administrator wants to disable the Linux Kernel WatchDog Timer Driver for security purposes. Which of the following will accomplish this task?

Blacklisting a kernel module prevents the kernel from loading it automatically at boot time or on demand. Adding `blacklist watchdog` to a file in the `/etc/modprobe.d/` directory (e.g., `/etc/modprobe.d/blacklist.conf`) ensures the `watchdog` module is not loaded.

Renaming a file in `/etc/modprobe.d/` is not a generic method for blacklisting and would only work if that specific file was directly loading the module.

There is no standard `/usr/modules/watchdog.conf` file for this purpose, and removing a parameter is not the correct way to disable a module entirely.

`/etc/modprobe.conf` is an outdated location for module configuration, and adding `watchdog=0` would typically be a module parameter, not a disable command.