You should put the options down below, because its impossible to understand what you mean with only this sentence.
Answer:
Advertising a product changed from simply announcing the existence of a product in a dull, dry fashion to persuading the public they needed and deserved to own the product. By developing repeat customers, advertising also helped build brand loyalty for the company.
Explanation:
It's probably D. To point out problems in the south given the subject of most of his marches was going against racism in the south
