‘Integrity’ refers to truthfulness or quality of being honest. Of the given options, option with the nearest meaning is Option B, ‘Character’. Character refers to personality or mentality. Option A ‘Power’ is the ability to do something, like we say power of speech. Option C ‘Wealth’ means abundance of money. Option D ‘Influence’ refers to impact or effect. Thus, the best fit as meaning of the word ‘Integrity’ is ‘Character’.