3-d-t has developed a printer that will "print" t-shirts and other simple articles of clothing on demand. in order to let customers know about this product, an advertising campaign should emphasize:

In order to let customers know about this product, an advertising campaign should emphasize on marketing.

Explanation:

Marketing is a tool that can be used to reach more people and also offer better services at a good price at the same time. For marketing to work effectively for your product, one has to utilize effective marketing strategies as follows;

Conduct proper research on the target audience; the target audience is the potential customers that this product is to be sold to. Adequate and proper research on the target audience is necessary to determine their preferences in terms of product quality, price and product accessibility. Other preferences can also be determined depending on the scope of the researchCreate a blog or website for your product; blogs or websites can be created to provide information about your product online. This means that anyone who has access to a computer or a smart phone with good internet can easily get information about your products and possibly buy.Market your product through social media; social media has become a global market due to the huge number of social media users. One can simply create a social media account, and connect with a number of potential customers. The campaign team can even decide take sample pictures of the shirts and share them to potential customers. The team will also need to include additional information concerning the product.Offer discounts; everyone loves to pay less for a product. So a carefully determined discount can attract more customers to the product since a lower price will attract additional customers that maybe could not afford the product prior to the discount.

All these marketing strategies if well implemented can take a business a long way in terms of sales.

The answer is  passage 1.