Answer:
Selling
Step-by-step explanation:
Sarah is primarily engaging in the marketing function of selling jars of raspberry jams.
Selling can be defined as the exchange of goods and services for cash. It is a transaction between the seller and the buyer. It is a process of persuading people to buy your products.
A seller is a person who sells goods or services in the market. A seller can also be referred to as a manufacturer or producer. A seller sells product.
A buyer on the other hand, is a person who purchase a product. A buyer can also be called a consumer, an end-user or a customer. A buyer buys product.
Selling usually takes place in the market.