Final answer:
The factor that is not underlying modern-symbolic prejudice is belief in non-traditional values.
Step-by-step explanation:
The factor that is not underlying modern-symbolic prejudice is belief in non-traditional values. Modern-symbolic prejudice refers to biases and negative attitudes that are subtly expressed and may be influenced by implicit biases. The other factors mentioned, such as mild to moderate anti-Black emotions, rejection of equality of opportunity, and little personal knowledge of Black people, can contribute to modern-symbolic prejudice.