Final answer:
The historical context of the story "Poison" helps explain Harry's attitude towards Dr. Ganderbai by reflecting the fear and distrust associated with witchcraft during that time.
Step-by-step explanation:
The historical context of the story "Poison" helps explain Harry's attitude towards Dr. Ganderbai. In the story, the old woman is seen as a witch and is killed for her actions. This historical context of witchcraft and superstition may have influenced Harry's attitude towards Dr. Ganderbai, who is also portrayed as someone involved in witchcraft. Harry's negative attitude towards Dr. Ganderbai can be seen as a reflection of the fear and distrust associated with witchcraft in the historical context of the story.