Which component is essential for stability during a crash for a forward-facing car seat?

The tether is crucial for stability during a crash for a forward-facing car seat because it provides an additional point of connection between the car seat and the vehicle. By anchoring the top of the seat to a tether anchor in the vehicle, it helps to limit the forward movement of the car seat in a crash. This reduces the risk of the child's head moving too far forward, which can be particularly dangerous during a collision.

The tether works in conjunction with the seatbelt, but its role is to provide extra support and minimize movement. Proper use of the tether can help to keep the car seat securely in place, contributing to better protection for the child. Therefore, it is an essential component for ensuring the safety and stability of a forward-facing car seat during a crash.