Answer: The answer is C. Using more narrowly targeted marketing messages.
Explanation: Market Segmentation is basically the act of dividing a large market into smaller groups, which can now easily be targeted and serviced.
In an increasingly segmented marketplace, the best option for companies it so make sure that they tailor their marketing messages to the segmented market chunk.
Basically, in order for companies to retain the loyalty of their market segment, or to get new customers, they have to make sure that their marketing messages are more narrowed and specific, in order to hold the attention of their target audience.
Using more narrowly targeted marketing messages will guarantee that the target market gets the message clearly and prompt them to patronize the company.