Translation:He has a different mind after the book.
This is a good question. Also the audio doesn't match the written phrase.
That was my answer as well but advised to insert "got" and marked red ???? He has GOT a different attitude after the book. Still confused ????
This question gets doesn't assess accuracy right. attitude is a fine translation for meon - but don't expect the course to be updated, so for this exercise answer mind when translating Irish to English. The audio plays fine, and matches the text, for me