"Who has information about this aspect?"
Translation:Chi ha informazioni su questo aspetto?
Duo doesn't know Italian grammar either? My answer is correct and theirs is wrong... and I can prove it. Chi ha informazioni riguardante quest'aspetto? (What I put and was counted wrong). There is elision of questo, questa, and quella before a noun beginning with a vowel. Examples: quest'aereo » this airplane quest'aula » this classroom quell'autostrada » that highway Source - http://www.italianlanguageguide.com/grammar/demonstrative-adjective.asp