Edward is a manager in an automobile company. He wants to increase awareness of his automobiles among customers. So option D, Newspaper Advertisement, would be the best promotional strategy for him.
Newspaper is the only medium which is used to widespread any news to the people belonging to all classes in a society. Newspaper is read by almost every person in every home or office. So if Edward wants to create awareness of his cars, he needs to spread the news to all the people. And newspaper is the best medium to reach the customers and create awareness about his automobiles.