Answer:
This manufacturer should have to take the option of dropping Dillard's and including Macy's and Saks Fifth Avenue.
Step-by-step explanation:
When manufacturers produce, they do so for the sake of gains and profits. A larger market provides bigger profits compared to a smaller one.
This question tells us that this manufacturer has a greater number of customers looking to get there products at Neiman Marcus, Macy's, and Saks Fifth Avenue. So since these places would provide him a bigger market, so he should partner with these retail markets (Neiman Marcus, Macy's, and Saks Fifth Avenue) and drop the market with just few customers (dillards).