The state of having complete understanding and knowledge of a subject or situation is referred to as

• A. Mastery
• B. Competence
• C. Proficiency
• D. Know-how

Answer: (A)

Mastery is the term that most fully captures complete understanding and knowledge. When someone has mastery, they can explain concepts clearly, see how ideas connect, and apply what they know across different problems and new situations. It goes beyond just knowing facts or performing tasks well; it implies a deep, integrated grasp that enables flexible, expert use.

Competence means you can meet a standard or perform tasks adequately, but not necessarily with deep understanding. Proficiency indicates a high level of skill, often practical, yet it doesn’t always involve thorough conceptual grasp. Know-how refers to practical ability or how-to knowledge, which may not require broad theoretical understanding.