Which organization works to promote the interests of businesses within the same industry or trade?

The correct answer is a trade association because such organizations are specifically formed to promote the interests of businesses that operate within the same industry or trade. Their primary function is to advocate for the industry by representing collective interests in matters such as legislation, regulations, and industry standards. They often provide resources, research, networking opportunities, and training for their members to enhance their competitiveness and address common challenges.

Chambers of commerce, while they do support businesses, tend to focus more broadly on local economic growth and the interests of all businesses in a region rather than being limited to a specific industry. Non-profit organizations can engage in advocacy but are not exclusively tied to the interests of a particular industry; their missions can vary widely. Multinational corporations operate in multiple countries and are individual companies rather than organizations that represent collective industry interests. Thus, the distinctive role of a trade association in promoting common interests within a specific trade sets it apart as the correct answer.