The correct answer is a. True. I hope this helps :)
The nature side of the "nature vs nurture" debate refers to biology.
Nature is referred to all the hereditary and genes factors that affects who we are, from our personality characteristics and physical appearance.
In psychology, the “nature vs nurture” debate is regarded with the extent to which specific conditions of behavior are a result either acquired or inherited attributes.
Ancient civilizations mostly problem Volcanoes explosive. natural disasters. civil war etc
The silk road was one of the only ways to get goods from other countries in that time period. People traded food, spices, skills, etc. With the trade, countries could try new cultures leading to the spread of cultures.