A. No one, no matter how strong, is invulnerable.
This is evidenced by the killing of Hector and Achilles, two great warriors, the latter of whom was invincible. Both of them were killed during the course of the war, showing that though they were very strong, they weren't invulnerable.
Answer:
The Northern renaissance was more of a visual thing. It was all about obvservation and what you saw in a work. But in the Italian renaissance, they focused on anatomy and body proportions when it came to observation in their work.