The correct answer is:
C. The Assyrians were able to conquer neighboring lands and expand their empire because of their military skill
It didn't really benefit them. It only benefited the people that sold slaves because they got money. The only other positive thing i can think of is if they took slaves from overpopulated areas.
an extraterrestrial impact, such as an asteroid or comet, or a massive bout of volcanism obliterated more than half the world's species leaving no vegetation as well.