Which characteristic of a goal allows you to know when you have accomplished it?

The characteristic of a goal that allows you to know when you have accomplished it is its specificity. A specific goal clearly outlines the desired outcome and often includes measurable criteria, making it easy to assess whether it has been achieved. For example, rather than a vague goal like "get fit," a specific goal would be "run 5 kilometers in under 30 minutes," which provides a clear benchmark for success.