What number is represented by the Roman numeral M?

The Roman numeral M represents the number 1,000. In the Roman numeral system, different letters stand for different values: M stands for 1,000, D represents 500, C stands for 100, and so on. Understanding the values of these letters is crucial for interpreting Roman numerals correctly.

In this case, since M solely signifies the value of 1,000, selecting it confirms the correct interpretation of the numeral. Other Roman numeral representations often involve combinations or placements of these letters to indicate different totals, but M by itself distinctly indicates that single value of 1,000.