Concept:Aids to trade are supporting services that make trading activities easier.
Explanation:Retail and wholesale are channels of distribution, not aids to trade.
Import and export are forms of foreign trade, not aids to trade.
Transport, insurance, banking and finance, and communication enable trade to take place smoothly.
They are classified as aids to trade.
Therefore, the activities that are aids to trade are III, V, VI and VIII.
Answer:A. III, V, VI and VIII