The fact that modern, sophisticated manufacturing innovations have enabled many firms to more easily customize their products and to offer them at dramatically reduced prices to satisfy the varying tastes of targeted customers represents the impact of the on the marketing of products.

The correct word that should fit in this gap is technology.

Explanation:

The preliminary information about "modern, sophisticated manufacturing innovations..." is a definition of the impact of technology. Thus, these equipments used by the firms had dramatically reduced the prices for the targeted customers. This is an impact of "the technology." The article "the" is used because the innovations had been mentioned in the previous part of the sentence.

i do not know and i have a 100 in this class