Final answer:
Kit perceives the woman who answers the door at Matthew Wood's house as stern and unwelcoming in 'The Witch of Blackbird Pond.'
Step-by-step explanation:
In The Witch of Blackbird Pond, Kit's impression of the woman who answers the door at Matthew Wood's house is b) Stern and unwelcoming. As Kit first steps on the Wood family's property, she encounters a woman whose demeanor doesn't convey warmth or friendliness. The woman's stern approach contrasts sharply with the welcoming appearance of the landscape that initially captivated Kit, demonstrating a critical moment of her adaptation to a new environment.