Which pair illustrates the ser vs estar distinction in Spanish?

• A. La manzana es roja; La manzana está verde
• B. La manzana es verde; La manzana está roja
• C. Él es cansado; Él está cansado
• D. El libro es interesante; El libro está aburrido

Answer: (A)

This question tests the distinction between ser and estar: use ser for qualities that define what something is, and estar for states or conditions that can change.

La manzana es roja; La manzana está verde shows this clearly. The color roja is treated as part of what the apple is, a characteristic of the object, while verde here points to a temporary state—the apple’s ripeness at the moment. Together they illustrate how one property can be described as inherent and another as a current condition.

In the other cases, the usage isn’t as clean. Using ser with cansado can imply a tiresome personality by nature in a way that isn’t the usual way to express tiredness, and the combination with a book uses interesante as a stable trait but aburrido with estar describes a reaction or mood about the book rather than a property of the book itself, making the contrast less direct.