Steve developed a mental illness in young adulthood. he seeks treatment but doesn't want to talk about his past. he says, "it's just genetic—nothing could have changed it." influenced by delores malaspina's research, steve's psychiatrist wants to know about steve's past marijuana intake, because smoking marijuana could:

Steve's psychiatrist wants to know about Steve's past marijuana intake, because smoking marijuana could change the way genes are expressed. The way Steve says "It's just genetic—nothing could have changed it." means that he is afraid and does not to talk about his past. Studies have revealed that cannabinoids induce chromosome aberrations in both in vivo and in vitro studies.

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.