The body that organizes, promotes and participates in local and foreign trade fairs is the...

Explanation

Chambers of Commerce are organizations that represent the interests of businesses in a particular area or industry. They work to promote and support local businesses, including organizing trade fairs and exhibitions. Trade fairs are events where businesses showcase their products and services to potential customers and partners. They provide a platform for businesses to network, market their products, and explore new business opportunities.

The Ministry of Commerce and Tourism (Option A) is a government department that oversees trade and tourism activities in a country. While they may have some involvement in trade fairs, their main role is to develop policies and regulations related to commerce and tourism.

The Ministry of Finance (Option B) is responsible for managing a country's financial resources and formulating economic policies. They are not directly involved in organizing trade fairs.

The Export Promotion Council (Option D) is an organization that promotes and supports the export of goods and services from a country. While they may be involved in trade-related activities, their focus is specifically on exports, not trade fairs.

Therefore, the correct answer is Option C: Chambers of Commerce. They are the body that organizes, promotes, and participates in local and foreign trade fairs.