What mode is used to control the cabin temperature manually?

The correct choice is effective because it emphasizes the specific feature of directly managing the cabin temperature. In manual mode, the user has the autonomy to adjust temperature settings independently, tailoring the environment to their personal preferences without any automated changes or presets intervening. This control allows for immediate adjustments based on external conditions or individual comfort levels.

While automatic mode generally manages temperature based on sensors and preset parameters, eco mode focuses on energy efficiency and optimizing fuel usage, which may not allow for precise temperature control. Comfort mode, while aimed at enhancing passenger comfort through automated adjustments, still does not provide the direct user input that manual mode does. Therefore, manual mode is the only choice that offers complete control over the cabin temperature settings.