The correct answer is the following: option a. When Lady Macbeth reads her husband's letter and asks: "Make thick my blood,/ Stop up th' access and passage to remorse" she is asking to be made cold and insensitive as she prepares to execute her evil plan.
"Macbeth" is a tragedy written by British author William Shakespeare and that is thought to have been first performed in 1606. It tells the story of how Macbeth becomes King of Scotland and how his and his wife political's ambitions makes his suffer all sorts of pains.
When Lady Macbeth asks for thicker blood and no remorse, she is asking to be made cold so she can execute her plan of killing King Duncan.
