Concept:Advertising is the aid to trade that creates awareness and stimulates demand for goods.
Explanation:Aids to trade are services that help trade to function smoothly.
Banking, transport, and insurance support the movement, finance, and safety of goods.
Advertising communicates information about products to potential customers.
It uses persuasive messages to influence buying behaviour and increase demand.
Therefore, advertising is the tool used to stimulate demand for goods.
Answer:D. advertising