Answer:
buy a total of 800 yds
Explanation:
I believe that the best option for the designer would be to buy a total of 800 yds of the fabric. This is assuming that the designer needs 400 yd for a specific item. Therefore, buying 800yds would allow her to make two entire items while also meeting the minimum that the Manufacterer requires for the purchase. This would cost more but would also efficiently put to use all of the fabric that is bought for the items. Therefore, making it the best option.