Your answer to this question helps us to understand your attitude to work and to pharmacy. I suggest you to speak about practical subjects. Emphasize that you enjoyed your practice, and that the experience has helped you to confirm your career choice.

On the other hand, each of us struggled with a subject or two. Be honest, tell us that you struggled, but ensure the interviewers that you did your very best to eventually pass the exams, becasue you understood the importance of each single subject at pharmacy school.