Final answer:
Asia, Europe, and North America are the continents with the most internet users, due to their population sizes and internet infrastructure.
Step-by-step explanation:
The three continents with the most internet users are Asia, Europe, and North America. This is due to a combination of population size and infrastructure development that supports internet access. Asia has the largest number of internet users by far, which aligns with its position as the most populous continent. Europe follows, with a high penetration rate of internet usage among its residents. North America, while having a smaller population compared to Asia and Africa, also has a high rate of internet utilization, placing it among the top three.