The correct answer is: B. Google Chrome.
Google Chrome was the first web browser to implement the omnibox, which is a single bar that combines the address bar and search bar. The omnibox was first introduced in Chrome 2 in 2008.
Safari was the first web browser to be released by Apple, in 2003. It is the default web browser on Apple devices, such as the iPhone, iPad, and Mac. Safari is based on the WebKit rendering engine.
Mozilla Firefox was the first open-source web browser, released in 2002. It is the second most popular web browser in the world, after Google Chrome. Firefox is based on the Gecko rendering engine.
Lynx is a text-based web browser that was first released in 1993. It is the oldest web browser still in development. Lynx is not based on any particular rendering engine.
The omnibox is a convenient feature that allows users to search the web and enter URLs without having to switch between different bars. It is one of the reasons why Google Chrome has become so popular.