Which sentence from the passage is the best example of the author's attempt to develop interest and engage his audience? a) by creating a bird friendly environment in your backyard with birdhouses, bird feeders, and plenty of trees, shrubs, and flowers that attract birds, you will have front-row seats to nature year-round. b) many types of trees, shrubs, and plants produce fruits, berries, acorns, and nuts that serve as food sources for birds. c) in addition, plant trees and shrubs that provide food to your feathered friends when temperatures drop. d) it is a good idea to have more than one bird feeder since different types of birds eat different foods.