Final answer:
The first OS was created in the 1950s, with 1956 being the closest correct answer from the options given. The significant shift in user interfaces came later in 1984 with the introduction of the Apple Macintosh computer's graphic interface.
Step-by-step explanation:
The first operating system (OS) was created in the 1950s. While the exact year can vary depending on the definition of what constitutes an OS, the options provided in the question point to 1956 as the closest correct answer. Before the advent of modern graphical interfaces, early operating systems were text-based and quite different from what we use today. The revolution in user interfaces didn't occur until the 1980s when Apple introduced the Macintosh computer, which featured a graphic interface based on icons and graphics. This was a pivotal moment in computers becoming more accessible and user-friendly, leading to the rapid expansion of personal computers in homes and offices, and setting the stage for the graphical user interfaces that have since become standard.