Answer:
Hmmm, let's see... prejudice/bigotry and indoctrination.
Intolerance cannot be 'most closely' related to a singular factor (of those listed). It is generally either an acquired and artificial propensity or simply a detestable aspect of human nature. There is a tendency for many to fear or to disdain anything starkly dissimilar to their own way.
Even if this bullying does not issue from a profoundly ideological perspective, it is a form of intolerance. Unfortunately, certain individuals are inclined to prey on those they feel they can easily torment with impunity and with support from others. In this case, the unsavory behaviour is likely more to do with the individual administering the persecution than with the victim.
In short, I cannot respond (to my own satisfaction) with any given selection of the answers proposed, but the likely 'correct' answer is <em>gender stereotypes</em>, as the word 'stereotypes' implies a form of prejudice and is therefore closest to intolerance. What is more, society's conception of gender and its 'norms' is objectively related to society's treatment of the LGBTQ community, unlike the other answers proposed (areas of interest, types of clothing, communication styles), which are instead related to gender norms/stereotypes.
Explanation:
I must apologise for this rather profuse answer, which you can take to mean 'I am ultimately uncertain '. I confess that I take issue with the question without any context. Is it based on some passage, in which factors of bullying are discussed? Regardless, I hope this helps :D
