What is the rule for adding additional jumpers to the length?

The correct choice is based on established guidelines for calculating the length adjustment when additional jumpers are added to a jump. In this context, the rule states that for each additional jumper, 75 yards should be added to the total length of the jump. This adjustment helps account for the increased weight and potential alterations in the descent trajectory due to the additional jumper, ensuring a safe and accurate landing zone.

It's important to understand the principle behind this rule, which is to maintain safety and precision in air operations. Adding the appropriate length based on the number of jumpers helps mitigate risks associated with crowded airspace and allows for adequate spacing during landing.

As for the other options, they represent different lengths that do not align with the current standard practices for jump calculations. Stick with the established 75 yards for each additional jumper to ensure safety and accuracy during aerial operations.