Final answer:
The difference between ser and estar in Spanish is essential for conveying accurate meaning and context.
Explanation:
Ser and estar are two forms of the copula in Spanish, used with different types of adjectives. Ser is to describe inherent characteristics while estar is for temporary states or conditions.
In the given sentence, the correct choice is es; están because the sentence describes a current, temporary state of being pleasant, which aligns with the use of estar.
Understanding the distinction between ser and estar is crucial in mastering Spanish grammar.
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