Which of the following describes an infinite loop?

An infinite loop is characterized by a scenario where the loop continues to execute indefinitely because there is no termination condition defined. This means that once the loop begins, it will not stop running, and it won't reach an exit point unless interrupted by an external force, such as the user manually stopping the program or the system running out of resources.

When analyzing the other options, a loop that ends when a specific condition is met clearly describes a terminating loop, as it allows the program to exit once the condition is satisfied. Similarly, a loop that executes a fixed number of times is designed to terminate after completing those iterations, hence it is not infinite. Lastly, a loop that executes and then immediately stops is not an infinite loop since it completes its execution cycle without repeating. These distinctions clarify why the correct choice accurately defines an infinite loop.