Final answer:
Merchandisers primarily work with retail and wholesale vendors, focusing on sales, office work, and marketing procedures for goods distribution.
Step-by-step explanation:
Merchandisers work primarily with retail and wholesale vendors. These professionals are involved in various activities such as purchasing, selling, and promoting products. They do not typically work with the public in national parks, customers in hardware stores, nor directly with government agencies that regulate trade, except for compliance purposes.
In their professional capacity, merchandisers may engage in activities categorizing under sales, clerical or office work, and may coordinate with managers, executives, or officials to streamline procedures in the marketing and distribution of goods. The primary markets they interact with include the Resource Market, where they offer their labor to businesses, and the Product Market, where goods and services are purchased.