Read the excerpt below and answer the question. Elinor's uneasiness was at least equal to her mother's. She thought of what had just passed with anxiety and distrust. Willoughby's behaviour in taking leave of them, his embarrassment, and affectation of cheerfulness, and, above all, his unwillingness to accept her mother's invitation, a backwardness so unlike a lover, so unlike himself, greatly disturbed her. (Sense and Sensibility, chapter 15, p. 16) Elinor Dashwood's "uneasiness" is in response to what event? the canceled outing to Whitwell Colonel Brandon's unexpected disappearance Willoughby's sudden leave Marianne's reckless pursuit of pleasure