Final answer:
General Zaroff lives in a chateau, a large French house, on the edge of the water, contrasting with the other less luxurious options provided.
Step-by-step explanation:
The correct answer to the student's question 'Which of the following is true of Zaroff's living conditions?' is d - In a chateau, a large French house, on the edge of the water. General Zaroff, a character from 'The Most Dangerous Game' by Richard Connell, lives in a luxurious mansion that could be described as a chateau. This would contrast starkly against the other options presented: a houseboat, a shack, or a haunted castle.