This question is primarily for people with work experience. If you are fresh out of college, then you will not be asked this question. The answer to this question should not disclose any real faults. Instead, try to think of something that doesn't sound too bad. Here is what I hear at my reviews and this is how I would answer this question.
This criticism is actually a common comment used by managers if they can't give you a good review score but have nothing bad to say about you. In large organizations, you are measured against your peers. That means if you do well, you might get a bad review score because everyone did better. Likewise, if you are just mediocre and everyone else is terrible, you will get a good review score. Because of this system, I'm regularly told to be more visible. So when I answer this question, I make sure to back up my disagreement with examples of being visible.
Naucz się mówić po angielsku dużo SZYBCIEJ pobierając wersję offline TalkEnglish i otocz się ponad 8,000 plików audio i ponad 800 stronami lekcji! Potem możesz uczyć się angielskiego bez połączenia z internetem, a także słuchać plików audio na swoim odtwarzaczu MP3 o każdej porze. Przejdź na stronę Pobierz i pobierz cały pakiet już dzisiaj!