What is indicated by a repeating decimal?

A repeating decimal represents a non-terminating decimal process because it continues infinitely with a specific sequence of digits repeating over and over. For example, the decimal representation of one-third (1/3) is 0.333..., where the digit '3' repeats indefinitely. This ongoing repetition signifies that the decimal does not reach a final endpoint, highlighting a non-terminating nature.

In contrast, a terminating decimal, like 0.25, concludes after a finite number of digits, and an exact, fixed value would not exhibit any repeated patterns. Likewise, a definite outcome suggests a singular result, which is not the case with repeating decimals that indicate an infinite continuation. Therefore, a repeating decimal truly illustrates a non-terminating process, making this answer the most appropriate choice.