Concept:A stock exchange is a market where securities, especially shares, are bought and sold.
Explanation:The main item traded on a stock exchange market is shares, also known as equities or stocks.
Shares represent units of ownership in a company.
Treasury bills, travellers cheques, and foreign currencies are traded in other markets like the money market or foreign exchange market.
On a stock exchange, companies issue new shares to raise capital, and these shares are then traded among investors.
Answer:D. New shares