The correct answer is: A. in export trade.
A charter party is a contract between a shipowner and a charterer for the use of the ship for a particular voyage or period of
time. It is used in export trade when a seller wants to ship goods to a buyer in another country. The charter party will specify the terms of the voyage, such as the port of loading, the port of discharge, the type of cargo, and the freight rate.Option B is incorrect because a charter party is not used
in import trade. In import trade, the buyer usually arranges for the shipping of goods from the seller to the buyer. The buyer may use a freight forwarder to help with the shipping arrangements.Option C is incorrect because a charter party is not used in internal trade. Internal trade is the trade of goods and services within a country. The goods are usually transported by truck or train.
Option D is incorrect because a charter party is used in export trade.