The correct option is Playwright.

Playwright is a modern end to end browser automation framework that can control Chromium Firefox and WebKit so it covers the major browsers you would need for storefront testing. Playwright includes features that simplify UI testing such as automatic waiting for elements the ability to intercept and modify network traffic and a built in test runner and it supports multiple languages which makes it a strong fit for automated web application tests.

JaCoCo is a Java code coverage tool and it does not perform browser automation or run end to end user interface tests so it is not suitable for controlling browsers.

Xamarin.UITest is focused on testing mobile applications built with Xamarin and native platforms and it is not designed to automate web browsers so it does not match the web storefront testing requirement.

Selenium WebDriver is a well known browser automation tool and it can run web UI tests but the question calls for Playwright as the best choice because Playwright provides built in multi browser support automatic waiting network interception and modern APIs that make reliable cross browser testing easier. You could use Selenium WebDriver in many scenarios but it is not the selected answer here.

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