Which of the following is not a web-browser?

Question

Accepted Answer

The correct option is (3):
MINIX is the correct answer because it is fundamentally different from the other options; it is a complete, Unix-like **operating system** (OS) developed by Andrew S. Tanenbaum primarily for educational purposes. You must understand the distinction between an operating system and an application program. An operating system is the core software responsible for managing the computer's hardware and software resources, serving as the foundation upon which all other programs run. In contrast, a web browser is an *application* program designed specifically to access, retrieve, and present information resources on the World Wide Web. Since MINIX is a system-level program (an OS kernel and utilities) and not an end-user application for viewing web pages, it is correctly identified as the option that is not a web browser.

The incorrect option is (1):
MOSAIC is historically significant and was, in fact, a pioneering graphical web browser. It was developed by the National Center for Supercomputing Applications (NCSA) and released in 1993. The introduction of Mosaic was a pivotal moment in the history of computing because it popularized the World Wide Web by providing a user-friendly, graphical interface that could display both text and inline images. Before Mosaic, the web was largely text-based and less accessible to the general public. Its function was purely to browse the web, thus making it a web browser.

The incorrect option is (2):
SAFARI is a very well-known modern web browser developed by Apple Inc. It is the default browser that comes pre-installed on all Apple devices, including Mac, iPhone, and iPad, which run macOS, iOS, and iPadOS, respectively. Safari is engineered for fast performance, power efficiency, and strong privacy and security features. Its explicit and primary purpose is to allow users to navigate the World Wide Web, access websites, and view content—the very definition of a web browser.

The incorrect option is (4):
OPERA is another well-established web browser that has been available for decades, developed by the Norwegian company Opera Norway AS. It has been a consistent innovator in the browser market, credited with introducing features such as tabbed browsing, which are now standard across all major browsers. Opera offers unique features like a built-in free VPN service and power-saving modes, all centered around the core function of retrieving and displaying web pages for users. Therefore, Opera is undeniably a web browser.