Which digits are used in the hexadecimal number system?

The hexadecimal number system is a base-16 system that utilizes a specific set of digits to represent values. In this system, digits range from 0 to 9, which represent values zero through nine, just like in the decimal system. In addition to these digits, hexadecimal includes letters A through F to represent the values ten through fifteen, with A equating to ten, B to eleven, C to twelve, D to thirteen, E to fourteen, and F to fifteen. This means that the total range of the hexadecimal system is from 0 to F, encompassing sixteen distinct values.

This understanding of the hexadecimal system illustrates why the choice that includes both the digits 0-9 and the letters A-F is correct. Other options do not provide the complete set of characters used in hexadecimal. One option incorrectly suggests using only the digits 0-9, while another confuses the representation of numbers by implying a range of 0-15, which doesn't accurately reflect the symbols used. The final option limits the digits to a decimal range of 1-10, which is also not relevant to hexadecimal. Thus, the correct answer accurately captures the full representation of the hexadecimal number system.