which of the following can be used to eradicate prejudice
Answers
Prejudice itself is not usually based on inherent, non-malleable attributes of an individual, such as gender, race, sexuality, etc. Prejudice is based on on commonly held beliefs about certain groups of people.
When people hear that a certain caliber of individuals often hold particular traits, whether about someone who's of a certain race, age, religion, career, or anything else of that nature, they are already expecting that individual to exhibit those traits whenever they meet them.
Human beings have a natural tendency to exchange ideas and beliefs, whether among peers, or from mentor to follower, such as from parent to child. When they notice (or think they notice) that certain individuals with common traits seem to operate in a similar manner, they de facto expect everyone else with those traits to operate in the same way as well.
The issue lies with the age old concept of classical conditioning.
Most people, when they have already been conditioned to think a certain way about someone else, are unlikely to give that individual the time of day to prove themselves. It takes a particular mindset to break free from stereotypes and prejudices. Even some of the most level headed individuals have prejudices because of the psychological impact of conditioning.
Conditioning is fundamental to survival, which is why I do not think prejudice will ever disappear. We have to recognize potential dangers and issues to protect ourselves from them.