What happens when a Promise is resolved?

When a Promise is resolved, it transitions from a pending state to a fulfilled state. This resolution triggers any associated then() method callbacks that have been set up to handle the successful outcome of the Promise. The then() method takes one or two arguments: a callback function that will run when the promise is resolved and an optional callback for when it is rejected.

This behavior allows JavaScript to handle asynchronous operations smoothly, enabling developers to write code that can wait for the completion of tasks (like API calls or file reads) without blocking the execution of other code. As a result, when the Promise resolves successfully, it indicates that the intended operation has completed, at which point the defined success handlers can be executed immediately.

Other options introduced concepts that aren't applicable in this context. For instance, stopping execution or changing the state to pending does not accurately describe the outcome of resolving a Promise. Additionally, while catch() is related to error handling in Promises, it is invoked when something goes wrong, not when a Promise is fulfilled. Thus, executing the then() method callbacks is the core action that occurs upon resolution of a Promise.