4. Before John can begin selling his new line of book bags, he must determine whether to offer the book bags in the school bookstore, online, in department stores, or in office supply stores. This element of the marketing mix is

The correct answer to this question is place.

The four elements of the marketing mix are known as the four Ps. They are product, price, place and promotion. This question is an example of what place is best for John to sell his new line of book bags.