B. Prejudice
Correct.
B is correct because prejudice was defined in lecture as an attitude
towards a specific person based on their group membership. In this case,
Bob has a negative attitude towards Karyl. Note that in Myers, prejudice
is defined specifically as a negative attitude, but in lecture it was stated
that a prejudice can be a positive attitude as well. For example, one
could be prejudiced in favor of certain people based on their group membership.