I have signed up to one the well known internet-hosted question banks. I have found it quite useful, but "failed" in Air Law because I did not know the minimum height of the aircraft registration lettering on the fuselage.
It is not something I have ever checked on my preflight walk-around, but perhaps I should take a tape measure in future!
Returning to earlier posts on the subject of lift, the quoted question assumes we are talking about a wing generating lift in opposition to the way gravity is acting. Aerodynamic lift can be generated in any direction - not just downwards - rudder/tail fin is an example. With pedant's hat on, I could have been tempted to reject such an answer, thinking they were trying to catch me out.