What Elisa sees at the end of "The Chrysanthemums" that makes her sad is That the stranger has thrown away her chrysanthemum sprouts
Explanation:
Elisa feels very disappointed after discovering that all that conversation that she had where she thought that more people understand her feelings toward the chrysanthemums and the growing of plants an all they represent when she sees the present she previously gave to the stranger, thrown away on the road.
Tom and Daisy attend a party at Gatsby's place the next Saturday night. Tom has no desire to attend the party, but his loathing for Gatsby makes him want to keep an eye on Daisy.