Final answer:
In 'Red Kayak', Mr. DiAngelo goes to Washington for a business trip, which is essential for the storyline and his absence contributes to the plot development. The correct anwer is option B.
Step-by-step explanation:
In the novel Red Kayak DiAngelo goes to Washington for a business trip. This is clearly stated in the novel, where the author describes Mr. DiAngelo's absence due to work-related reasons. There is no mention of him attending a special kayaking event, going to a conference, or visiting family or friends in Washington. It is crucial for the storyline as it sets up certain events that unfold when he is away from home. The correct anwer is option B.