Which action should always be avoided when in possession of a firearm?

Keeping your finger on the trigger of a firearm is an action that should always be avoided. This practice is a fundamental safety violation known as "trigger discipline." Maintaining your finger off the trigger until you are ready to shoot is essential for preventing accidental discharges. When your finger rests on the trigger, even slight unintended movements can lead to a firearm being discharged, resulting in unintended injury or property damage.

The other options relate to different aspects of firearm handling. Pointing a firearm at the ground can be seen as safe in certain circumstances, though situations vary. Remaining silent does not pose a safety risk and may be necessary in certain hunting situations, while engaging the safety is a recommended practice for ensuring the firearm is secure when not in use.