What is the primary characteristic of Arabica coffee beans?

Arabica coffee beans are primarily characterized by their sweet, smooth flavor profile, which is often described as being less bitter and more nuanced compared to other types of coffee beans, particularly Robusta. Additionally, Arabica beans contain less caffeine than Robusta beans, which contributes to their milder taste. This combination of lower caffeine content and a smoother flavor makes Arabica highly desirable among coffee enthusiasts who prefer a pleasant and aromatic cup of coffee.

The other characteristics mentioned in the other options do not accurately represent Arabica coffee. For instance, high caffeine content is a feature of Robusta beans, not Arabica. The strong, bitter flavor is also more aligned with Robusta, which tends to have a more intense and harsh taste. Similarly, the bold, smoky flavor does not reflect the smooth and sweet characteristics of Arabica, as that description better fits certain preparation styles of other coffee types or blends. Thus, the defining trait of Arabica is indeed its sweet and smooth flavor with lower caffeine content.