According to the text, what were the estimated worldwide advertising spending and U.S. advertising spending by P&G, the world's largest advertiser?

Correct answer: More than 4.6 billion dollars in the U.S. and 11.5 billion dollars worldwide.

Explanation

This question tests the reader's recall of specific quantitative data presented in the chapter to illustrate the scale of advertising investments by major corporations like Procter & Gamble (P&G).