Question 8. Explain Why Did You Leave Your Last Position?
Mostly, this is looking for conviction of character. A strong, concrete answer of any reasonable sort is good here. “I wanted to move on” is not a strong answer. Downsizing is a good answer, as is a desire to seek specific new challenges (but be specific on what challenges you want to face). Minimize your actual discussion of your previous position here, as you'll be very close to a big opportunity to start bashing your previous position.