Answer:
b) Xenophobia
Explanation:
The scenario you described, where a girl dressed in cat-ears and long socks calls on Japanese people to kill Koreans living in the country, is an example of:
b) Xenophobia
Xenophobia refers to the fear or hatred of foreigners or people from different cultures. In this case, the call for violence against Koreans living in Japan demonstrates a hostile attitude toward individuals of a different nationality or ethnic background.