Which factor has not contributed to a decline in the number of young adolescent smokers in the united states?

answer; i believe the correct answer is (a) the correlation between the cause variable and outcome variable is zero;

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.