Answer:
Traders grouped hundreds, sometimes thousands, of camels together to trade goods.
Ships coming together at the ports for trade.
Explanation:
Caravan has many meanings and used as noun.
As a noun, a caravan means group of travelers in desert along with their animals and vehicles that travel together either for trade or vacation purpose.
So, traders in a group along with their camels together to trade goods and ships in ports for together are Caravan.
Hence, the correct answer is: "B and C"
