What is the default method used for privilege escalation by Ansible?

The default method used for privilege escalation by Ansible is sudo. When running tasks that require elevated privileges, Ansible uses sudo to execute commands as a superuser.

You can specify this in your playbook or command line by using the become directive, like so:

- hosts: all
  tasks:
    - name: Install a package
      apt:
        name: package_name
        state: present
      become: yes

This tells Ansible to use sudo to install the package. If you have further questions or need more details, feel free to ask!