Which of the following BEST explains how Selenium fits within the test automation architecture?

Selenium interfaces with the System Under Test (SUT) to interact with it and run tests on it [1]. Selenium is a tool that is used to automate web browsers, which allows testers to create automated tests to verify the functionality of the SUT. It helps to reduce the need for manual testing and allows testers to test multiple browsers quickly and efficiently.

Selenium is a software tool that is used for automating web browsers. It interfaces with the System Under Test (SUT) by interacting with the web browser and the web application that is being tested. Selenium uses a set of APIs that allow you to control the browser and interact with elements on the web page, such as buttons, text fields, and links. By automating the browser and interacting with the web application in the same way that a user would, Selenium can be used to automate functional tests, regression tests, and other types of tests.