1-C. In paragraph (3,) the author explains that computers can be more easily operated with the base-2 system.In paragraph (3,) the author explains that computers can be more easily operated with the base-2 system.
2-C. One reason the base-2 system was chosen is that the "digital switches" inside the computer can be set to either ON or OFF, represented by 1 and 0, respectively.One reason the base-2 system was chosen is that the "digital switches" inside the computer can be set to either ON or OFF, represented by 1 and 0, respectively.
3-C. (3) Every time you use a computer, you are relying on one of the most important numerical tools in the modern world: the base-2 system.(3) Every time you use a computer, you are relying on one of the most important numerical tools in the modern world: the base-2 system.