Which excerpt from silent spring best appeals to readers’ pathos?

a. so it had been from the days many years ago when the first settlers raised their houses, sank their wells, and built their barns.
b. the town lay in the midst of a checkerboard of prosperous farms, with fields of grain and hillsides of orchards where, in spring, white clouds of bloom drifted above the green fields. in autumn, oak and maple and birch set up a blaze of color that flamed and flickered across a backdrop of pines.
c. the countryside was, in fact, famous for the abundance and variety of its bird life, and when the flood of migrants was pouring through in spring and fall people traveled from great distances to observe them.
d. yet every one of these disasters has actually happened somewhere, and many real communities have already suffered a substantial number of them. a grim specter has crept upon us almost unnoticed, and this imagined tragedy may easily become a stark reality we all shall know.