In order to depart, which statement is true regarding aircraft position?

Being number one upwind is not a requirement for departure; however, you do need to be number one with interval when it's time to take off. This means that while you can be queued behind other aircraft in the upwind position, your turn to depart must be next in line with an appropriate spacing or interval from any preceding aircraft that takes off. This ensures safe and efficient departures, allowing the other aircraft to clear the runway before you proceed.

The requirement for being "number one with interval" ensures that adequate separation is maintained between departing aircraft, which is crucial for air safety and avoiding wake turbulence issues that can occur if aircraft take off too closely together.