Answer:The two phrases that best reveal the meaning of "blight" in this excerpt are:1. "last bitter hour"2. "sad images...shroud, and pall"These phrases indicate that "blight" refers to a dark, oppressive, and painful influence or presence, likely symbolizing:- Death's shadow- Sorrow's grip- Despair's chillIn this context, "blight" signifies a damaging or destructive force that affects the spirit, akin to a plant blight that withers and destroys. Bryant suggests escaping such bleak thoughts by embracing Nature's solace.