Option 1 -> exasperated means irritated or frustrated, which is a synonym of piqued, not an antonym.
Option 2 -> isolated means separated or alone, which doesn't relate to the emotional state described in the sentence.
Option 3 -> delighted means very pleased or happy, which is the opposite of being annoyed or irritated (piqued).
Option 4 -> ravaged means severely damaged or destroyed, which is unrelated to the emotional context.
Hence, Option 3: delighted -> "Piqued" in this context means annoyed or irritated. The antonym would be a positive emotion, and "delighted" (meaning very pleased or happy) is the direct opposite of being irritated. -> correct