Which spoiler panels move on the ground?

Spoiler panels are aerodynamic devices that are typically found on aircraft wings. Their primary purpose is to disrupt airflow over the wings and reduce lift, which is particularly useful during landing to help increase drag and facilitate a safer descent.

When considering which spoiler panels move on the ground, it's important to understand that many aircraft have spoilers located on both the left and right wings, as well as rear spoilers. All of these can be deployed during ground operations, especially upon landing. The rear spoilers often play a crucial role in enhancing braking performance along with aerodynamic stability as the aircraft decelerates after touchdown.

By choosing the option that states all of them move on the ground, it aligns with the understanding that all relevant spoiler panels are designed to function in unison to optimize aircraft control and aerodynamics both in the air and during ground operations. This makes the selection of this option the most comprehensive and accurate choice regarding the functioning of spoiler panels.