The correct option is B It refers to goods transported through railways and roadways.
The term, freight, is generally used to denote goods transported by trucks or trains. 'Cargo' is generally used for goods transported by ships or planes. However, freight can denote many things. It may refer to the product, the merchandise, the amount payable, or the money charged, for instance. Freight may not only refer to the goods transported but also to the process of transporting goods. However, cargo only refers to the goods being transported. Both terms are used for imported as well as exported goods.