I think it would be answer D, to introduce an idea because it's introducing the idea of a Venus Fly Trap's diet.
The correct answer is letter A. <span>Sylvia struggles between protecting the heron and gaining the money. </span>In "A White Heron," Sarah Jewett portrays Sylvia's attitude about money by showing that <span>Sylvia struggles between protecting the heron and gaining the money. </span>
The Answer to the question is A