What is the purpose of using setTimeout() in JavaScript?

Using setTimeout() in JavaScript serves the purpose of delaying the execution of a function by a specified amount of time. When you call setTimeout(), you can pass in a function and a time duration in milliseconds. The function will then execute only after the specified delay has passed, allowing developers to create timed routines or defer execution until a later time.

This functionality is particularly useful in scenarios where you need to manage timing, such as creating animations, handling user interactions, or delaying actions to improve user experience. For example, you might want to wait briefly before executing a function to ensure that other processes have completed or to create a pause for visual effects.

The other options do not accurately describe the purpose of setTimeout(). Enhancing function execution speed or executing functions in parallel are not related to the behavior of setTimeout(), nor does setTimeout() serve to remove functions from the call stack. Instead, it simply schedules a function to be executed at a later point in time without modifying the call stack directly.