Read the following text with five gaps. Choose the best sentence or phrase from the list A~F. (There is one extra item.) For gaps 1~5, mark one letter (A~F) to fill each of the gaps. Do not mark any letter twice. The third function of packaging is to promote a product by communicating its features, uses, benefits, and image. A designer must consider size, shape, texture, color, and graphics. Through verbal and non-verbal symbols, the package can inform potential buyers about the product's content, features, uses, advantages, and hazards. A firm can create desirable images and associations by 3.___________.