Answer:
Product differentiation.
Explanation:
In a perfectly competitive market businesses produce and supply goods that are homogenous and so they need to compete to sell to the consumer. Having a differentiated product in this market gives a competitive advantage where the firm's product is distinct from others.
Dollar shave club it offers high-quality blades available by mail for a few dollars a month. Dollar Shave Club’s advertising promotes the time- and money-saving aspects of its product.
This is a form of product differentiation.
