What does "ubiquitous" mean?

The term "ubiquitous" refers to something that is present or found everywhere at the same time. This capacity to exist simultaneously in multiple places is often used to describe phenomena or entities that are common or widespread, such as technology or cultural trends. For instance, one might say that smartphones have become ubiquitous in modern society, indicating they are found in virtually every aspect of daily life.

In contrast, the meanings of the other options do not align with the definition of "ubiquitous." The first option refers to something that is restricted to a specific area, the third suggests scarcity, and the fourth implies a conceptual existence rather than a physical one. Thus, the clarity and breadth of "ubiquitous" as being everywhere distinguishes it as the correct understanding of the term.