The options are outdated. More than 38% of the world's population use the web today; that's over 3 billion people. China alone has more than 700 million internet as at now; which is more than double the U. S population (This kind of eliminates the first 3 options). The number of internet users has more than quadruple in the last 10 years. In 1995, less than 2% of the world's population use the web, but there are currently more than 3.7 billion people who use the web today. There's no definitely number because internet penetration increases as the days rolls on.
