Final answer:
Your finger should only be on the trigger when you are on target and have made the conscious decision to fire. This is a critical gun safety rule to prevent accidental shootings and ensure responsible firearm handling.
Step-by-step explanation:
The only time your finger should be on the trigger is A. When you are on target and have decided to fire. This fundamental rule is part of basic firearm safety to prevent accidental discharges and ensure that every shot is intentional and directed at a safe and legitimate target. Handling firearms responsibly is crucial, whether at a shooting range or in a controlled hunting environment. Prior to putting a finger on the trigger, one must be certain that they have a clear line of sight to their target and that there is no risk of harm to unintended targets or bystanders. This rule is a cornerstone of gun safety protocols universally agreed upon by firearm experts and instructors.