Final answer:
The terrain of Rome hindered the exchange of ideas and trading due to the difficulty of communication and transportation. Access to seaports was crucial for trade as shipping by sea was less expensive than by land.
Step-by-step explanation:
The terrain of Rome had a significant impact on the sharing of ideas and trading. Option B) It hindered the exchange of ideas and trading is the correct answer. Rome was originally built amidst seven hills, making it difficult for easy communication and transportation. The terrain also limited the development of an extensive road network, making shipping by sea more common and important for trade. Access to seaports was crucial to Roman trade as shipping by sea was less expensive than by land.