When using the term "alias", which of the following is correct?

The term "alias" specifically refers to a name that someone uses in place of their true name, often for the purpose of concealment or to create a distinct identity. This terminology is frequently used in various contexts, such as literature, law, and online identities.

The concept behind an alias highlights the idea of a pseudonym or an assumed name that one might adopt for various reasons, such as privacy, disguise, or creative expression. This is why B is the correct choice; it aligns perfectly with the established definition of the term "alias."

In contrast, the other choices pertain to different concepts entirely: the first option relates to expertise rather than identity; the third option involves agreements, which is unrelated to names; and the fourth option describes quickness, which does not connect to the idea of a name or identity at all. Understanding the distinction between these definitions helps clarify why "alias" specifically means an alternative name rather than any of the other concepts presented.