Answer :

Final answer:

Homophobia is defined as an extreme or irrational aversion to homosexuals or those perceived to be LGBTQ. It involves stereotypes, prejudice, and discrimination against individuals based on their sexual orientation. It is a systemic disadvantage embedded in social institutions.

Explanation:

Siebert defines homophobia as an extreme or irrational aversion to homosexuals or to those perceived to be LGBTQ. It is characterized by stereotypes, prejudice, and discrimination against individuals based solely on their sexual orientation. Homophobia is part of a systematic disadvantage embedded in social institutions, similar to racism and sexism. It is often expressed through exclusion, avoidance, and discrimination of LGBTQ+ people in various social contexts