You design and make women's jewelry, which you sell through an e-commerce site. based on feedback from potential customers, you have decided to make a few changes to your site, such as developing a loyalty program, publishing customer testimonials, and including your better business bureau online accreditation logo. these steps are designed to address potential customers'

These steps are designed to address potential customers' LACK OF TRUST.

Explanation:

In every relationship a person needs to be valued so that they can trust that relationship and it is also the same thing with customers they get discouraged if they are not rewarded for their effort.

A loyalty program however encourages the customer to associate with that business because they know their loyalty will be rewarded.

Customers testimonials give your potential customers the idea of how others feel about your business , they can evaluate from these testimonies if they can trust your business.

Accreditation means your business is recognised professionally and that can essure them that they can trust your product.

answer; i believe its called ; checks   and balances;

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."