Answer:
The sentences in this excerpt from "The Yellow Wallpaper" by Charlotte Perkins Gilman that suggest that the narrator’s husband has a condescending attitude toward her are:
"What is it, little girl?", "I am a doctor, dear, and I know." , "Bless her little heart!" and "she shall be as sick as she pleases!"
Explanation:
The Sentences or expression show the condescending attitude of her husband towards her, mainly with the kind of the language he uses, the intention of the expressions like "What is it, little girl?", "I am a doctor, dear, and I know." , "Bless her little heart!" and "she shall be as sick as she pleases!" is to make the opinions of the narrator irrelevant and unrequired, besides, her husband put himself with the only person who thinks clearly.