Haggar Apparel, one of the United States' largest producers of ready-made custom-fit suits, has responded to the dress-down trend at work by adding jeans and a "relaxed, yet tailored" line of suits called City Casuals. Haggar anticipates that its current customers will be the primary consumers of the new line. According to the product-market matrix, Haggar Apparel is pursuing an opportunity of:
Product development
Market penetration
Market development
Diversification
Differentiation
Answer: Product development