It kinda gives away the answer when it is only word that is capitalized.
Duolingo in a nutshell
Looks like Bienvenue
What is the difference between bonvenon and bonvena?
Here is an example of that arbitrary application: Bonvenon is correct , but Bonvesperon is not. What is the actual rule for abbreviating and attaching the adjective?
Why would it not simply be "Bonvolu"?
They are two different words used in different situations. "Bonvolu" is usually translated as "please".
How about "Bonvenu"?
Autocorrect spelt it "nondenominational".
I got it wrong. Lol.