And why would "an apple, a bread and water" be wrong? Or is it just missing in the set of correct answers?
Bread in English is non-countable like milk and honey, so you can't have '1' of it. You need to use a construction such as 'a loaf of bread'.
I am sorry, but the polish sentence does not seem to say " You have an Apple bread". Something seems to be wrong here.
Polish is plural or very dated formal you - I don't recommend using it also because of communist connotations (the communist tried to revive 2 person plural in place of Pan/Pani/Państwo).