How is the term trivial best defined?

The term "trivial" is best defined as being small and of little importance. It conveys the idea that something is insignificant or not worthy of serious consideration. For example, in conversations, people may refer to minor details or issues as trivial to indicate that they do not carry much weight or relevance in a broader context. This meaning aligns perfectly with the correct choice, emphasizing the notion of inconsequence or lack of significance.

In contrast, the other options imply a level of importance or complexity that does not match the essence of the word "trivial." For instance, defining "trivial" as significant, complex, or relevant to major decisions contradicts the foundational concept that associates the term with something minor and unimportant. Thus, choice B accurately reflects the essence of the term.