What does the word "acumen" imply about a person's abilities?

The term "acumen" specifically refers to a person's ability to make good judgments and quick decisions in a particular domain, often highlighting keen insight and sharpness in thinking. When someone possesses acumen, they are seen as having a sharpness of mind and an astuteness that enables them to understand and evaluate situations effectively. This quality is often prized in leadership, business, and various professional contexts where quick and accurate decision-making is crucial. Hence, the choice suggesting that they have keen insight and judgment directly aligns with the definition of "acumen."