"Please with which one?"
It told me there were 2 correct answers: "Bitte mit welchem" and "Bitte mit welcher." Both are correct as the unnamed things can be masculine/neuter or feminine.
why is it the -m version for all the other "mit + welche(X)" things, except this one? qq
This is the second time around I went through this question and I answered it opposite to what I answered last time (as the solution told me) and it's still wrong!