Final answer:
In 'The Scarlet Letter,' Roger Chillingworth seeks to uncover the identity of Hester Prynne's lover while she is in prison, attempting to extract this information through conversation.
Step-by-step explanation:
The question "What does Chillingworth extract from Hester while she is in prison?" refers to the interactions between two characters, Roger Chillingworth and Hester Prynne, in Nathaniel Hawthorne's classic novel, The Scarlet Letter. In the novel, Roger Chillingworth, who is Hester Prynne's husband, does not extract anything physical from her, but he does seek to uncover the identity of the man with whom she had an affair - the father of her child, Pearl. Chillingworth poses as a doctor to gain access to Hester in prison and attempts to extract this information through conversation by offering his care and presenting himself as someone who could lessen her burden if she reveals her secret.