Choose the option that is closest in meaning to the underlined word.

They were all flabbergasted when the most introvert member of the group stood up and sang a beautiful song, revealing an unexpected talent they never knew he possessed.

dumbfounded

The correct answer is Option (3) → dumbfounded

• Flabbergasted (Adjective): Overcome with astonishment or surprise; greatly shocked.

• Dumbfounded (Adjective): Greatly astonished or amazed; speechless with amazement.

  Why the Other Options Are Incorrect: 

  • In belief (Phrase): Expresses certainty or trust; this is not a synonym for surprise.

  • Embarrassed (Adjective): Feeling or showing awkwardness, shame, or self-consciousness; this is an emotion distinct from astonishment.

  • Entertained (Adjective/Verb): Diverted or amused; while they were surely entertained, the word flabbergasted primarily conveys the shock of the discovery, not the enjoyment.