Concept:Occupations are classified based on the type of work, and a stock exchange broker supports trade by dealing in securities.
Explanation:Stock exchange brokers buy and sell shares and other financial securities on behalf of investors.
They do not produce goods, extract raw materials, or manufacture products.
Their work is a service that helps trade to take place smoothly, so it belongs to the commercial group of occupations.
Commercial occupations include trading and all auxiliary activities such as banking, insurance, warehousing, and broking.
Answer:B. commercial occupation