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Explanation:

“Vexation” meaning ‘the state of being annoyed, frustrated, or worried’ and “happiness” are antonyms of each other.
“Baleful” meaning ‘threatening harm’ and “benevolent” meaning ‘well meaning and kindly’ are antonyms of each other.
“Recluse” meaning ‘a person who lives a solitary life and tends to avoid other people’ and “extrovert” meaning ‘an outgoing, socially confident person’ are antonyms of each other.
“Itinerant” meaning ‘travelling from place to place’ and “static” are antonyms of each other.
Hence, the correct answer is option 3.