Answer the following question using the possessive adjectives (mon, ton, son) be careful with the agreement of the possessive adjectives: qui est sur ton affiche?

Hi !

Your question isn't very  clear ...seems that something is missing ...

If you had to answer :
that would be = C'est sur mon affiche .

be careful when using "his, her" in English it agrees with the owner but not in French. It agrees with the following word, no matter the owner.

I'm 100% French !!!

hope I could help !! 

Hi,

Hi,

Answer the following question using the possessive adjectives (mon,ton,son) be careful with the agreement of the possessive adjectives:
 Qui est sur ton affiche?

C'est qui est sur mon affiche.