Option 1 -> While he may react to criticism, this misses the key element of his excessive pride indicated by "overweening vanity."
Option 2 -> This directly captures both the excessive nature of his pride ("overweening vanity") and his sensitivity to any insult against it ("affront").
Option 3 -> This contradicts the phrase entirely—if he were indifferent, nothing would be an affront to him.
Option 4 -> This is opposite to the meaning—"overweening vanity" indicates excessive pride, not humility.
Hence, Option 2 -> The phrase "overweening vanity" reveals Mr. Kelada's excessive, arrogant pride, and the fact that things can be "an affront" to it shows he is extremely sensitive when that inflated ego is challenged or slighted in any way. -> correct