A developer must add an idempotent task to an Ansible playbook that configures a Cisco IOS device. HTTP traffic must be permitted from 192.168.1.1 to 192.168.1.5 host machine. Which code snippet…

The `ios_command` module executes commands without checking the current state, making it non-idempotent and unsuitable for declarative configuration tasks where idempotence is desired.

While using `ios_config`, the syntax `eq www` is an alias for port 80, but using `eq 80` is more explicit and generally preferred. Both B and C are very close, but `eq 80` is typically seen as more direct.

The `ios_config` module is designed for idempotent configuration management on Cisco IOS devices, ensuring changes are applied only if the desired state is not met. The `lines` argument correctly specifies the access-list entry to permit TCP traffic from 192.168.1.1 to 192.168.1.5 on port 80 (HTTP).

The `ios_command` module is not idempotent, and the `args` parameter is used for passing arguments to a command, not for defining configuration lines directly in the way `ios_config` expects.