In programming, what does a 'while loop' primarily utilize to control its execution?

A 'while loop' primarily utilizes a specific condition to control its execution. This programming construct repeatedly executes a block of code as long as the given condition evaluates to true. Once the condition becomes false, the loop terminates. The flexibility of the while loop allows it to handle scenarios where the number of iterations isn't predetermined, making it particularly useful when the exact number of repetitions is dependent on dynamic conditions, such as user input or state changes in a program.

In contrast, the number of iterations, predefined ranges, and random values do not directly dictate the execution of a while loop. While a loop might run a certain number of times or be influenced by randomness, those aspects do not define the fundamental mechanism by which the while loop operates. The essence lies in the evaluation of the specific condition that governs whether the loop continues or stops executing.