Answer: B. reinforce the idea that unanticipated pleasures are the most enjoyable ones
Step-by-step explanation:
In the first sentence of the first paragraph, the author states directly that “Pleasure is very seldom found where it is sought.” In the second sentence, he elaborates on this claim by indicating that pleasures arising from unexpected sources (and which, therefore, could not be sought) in fact create the very greatest pleasure (“Our brightest blazes of gladness”). This idea is then reinforced in the last sentence of the paragraph, in which such pleasure is likened to enjoying flowers that one could not have anticipated because they have grown “from seeds scattered by chance” rather than from seeds that had been cultivated (planted and tended) for the purpose of bringing enjoyment