What is the function of indicators in relation to pH?

Indicators serve a crucial role in demonstrating the pH level of a solution through a visible color change. Each indicator is designed to change color at specific pH ranges, allowing for the identification of whether a solution is acidic, neutral, or basic. This property is invaluable in various scientific applications, particularly in titration processes and pH testing, as it provides a visual representation of the acidity or alkalinity of a solution.

The other functions mentioned, such as enhancing acidity, buffering, or neutralizing, do not accurately describe what indicators do. Instead, indicators specifically facilitate the detection of pH levels rather than altering the solution's acidity or base characteristics.