Final answer:
Your friend's response indicates apathy, as they do not show understanding or concern for your situation and instead suggest a change in perspective.
Step-by-step explanation:
When you complain to your friend about noisy roommates and they respond by encouraging you to be more positive and to not take things for granted, they are not expressing sympathy, empathy, or antipathy; they are showing apathy. Sympathy would involve acknowledging your feelings of discomfort with the noise and possibly offering comfort. Empathy would involve them understanding and feeling your frustration as if it were their own. Antipathy would mean they have a strong dislike or opposition to your situation. However, apathy is displayed as they seem to disregard the impact of the noise on you and instead advise a change in your perspective.