What should the index vane on an arrow indicate?

The index vane on an arrow plays a crucial role in ensuring it flies correctly when shot from a bow. When the index vane is positioned pointing down, it allows the arrow to be correctly oriented as it leaves the bowstring, ensuring that the other vanes are positioned to help stabilize the arrow during flight.

This orientation minimizes the chances of fletching interference and promotes a more stable and accurate flight path. Proper positioning of the index vane reduces the likelihood of the arrow yawing or veering off course when it is released, ultimately leading to better accuracy in targeting.

Positioning it upward or sideways, as suggested in other options, could lead to instability during flight, potentially causing erratic behavior and inaccuracy. Removing the index vane might lead to further complications, as it serves an important function in the overall flight dynamics of the arrow.