Concept:A chamber of commerce is an association of business people and traders that works to protect and improve the business interests of its members.
Explanation:The major function of a chamber of commerce is to foster and encourage trade activities.
It helps business people connect with markets beyond their immediate town or city.
By doing so, it promotes trade within the country, which is known as home trade.
It also supports trade with other countries, which is known as foreign trade.
Thus, the chamber of commerce acts as a bridge for both local and international business opportunities.
It does not concentrate on a single product line, because that is the role of a trade association.
Its focus is broad, covering the general commercial interests of its members.
This enables businesses to expand their reach and find new customers.
Therefore, the principal contribution of a chamber of commerce is the promotion of both home and foreign trade.
Answer:A. Promoting both home and foreign trade.